Fix the issues reported by phpcs

Please review !3 MR.

-    // @Todo check if we need this.
+    // @todo check if we need this.

What follows @todo is a sentence: The first word must be capitalized and the sentence must end with a period.

+/**
+ * @file
+ * Installation functions for Term Reference Fancytree module.
+ */

The usual description is Installation and update hooks for [module name].

/**
- * @var $form_state \Drupal\Core\Form\FormState
+ * @var \Drupal\Core\Form\FormState $form_state
*/

Those comments are written in a single line, not three.

/** @var \Drupal\Core\Form\FormState $form_state */

See User::baseFieldDefinitions(), for example.

    /** @var \Drupal\Core\Field\BaseFieldDefinition[] $fields */
    $fields = parent::baseFieldDefinitions($entity_type);
    $fields['uid']
      ->setLabel(t('User ID'))
      ->setDescription(t('The user ID.'));
    $fields['uuid']
      ->setDescription(t('The user UUID.'));

Hi @apaderno MR updated Please check.
and for @todo statement reference →

That is a still-open issue, which means nothing has been yet changed in the coding standards.
Until then, what follows @todo must be a sentence, which (as per sentence definition) must start with a capitalized word and end with a period.

We will get this warning if we change @todo to @Todo
WARNING | [x] '@Todo check if we need this.' should match the format '@todo Fix problem X here.

@todo is not part of the sentence. That is why I said what follows @todo must be a sentence.

MR updated Please review.

The reported Problem/Motivation aren't the only phpcs errors that was thrown. Please see below:

➜  contrib git:(main) ✗ phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml,twig term_reference_fancytree

FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/term_reference_fancytree.install
----------------------------------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
----------------------------------------------------------------------------------------------------------------------------------
 1 | ERROR | [x] Missing file doc comment
----------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/docs/how-it-works.md
----------------------------------------------------------------------------------------------------------------------
FOUND 0 ERRORS AND 10 WARNINGS AFFECTING 10 LINES
----------------------------------------------------------------------------------------------------------------------
  5 | WARNING | Line exceeds 80 characters; contains 121 characters
  8 | WARNING | Line exceeds 80 characters; contains 132 characters
 18 | WARNING | Line exceeds 80 characters; contains 170 characters
 25 | WARNING | Line exceeds 80 characters; contains 186 characters
 31 | WARNING | Line exceeds 80 characters; contains 118 characters
 35 | WARNING | Line exceeds 80 characters; contains 126 characters
 41 | WARNING | Line exceeds 80 characters; contains 110 characters
 43 | WARNING | Line exceeds 80 characters; contains 110 characters
 45 | WARNING | Line exceeds 80 characters; contains 254 characters
 49 | WARNING | Line exceeds 80 characters; contains 156 characters
----------------------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/docs/index.md
---------------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AND 5 WARNINGS AFFECTING 6 LINES
---------------------------------------------------------------------------------------------------------------
  5 | WARNING | [ ] Line exceeds 80 characters; contains 147 characters
  9 | WARNING | [ ] Line exceeds 80 characters; contains 156 characters
 11 | WARNING | [ ] Line exceeds 80 characters; contains 178 characters
 13 | WARNING | [ ] Line exceeds 80 characters; contains 174 characters
 17 | WARNING | [ ] Line exceeds 80 characters; contains 173 characters
 38 | ERROR   | [x] Expected 1 newline at end of file; 2 found
---------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
---------------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/readme.md
-----------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AND 7 WARNINGS AFFECTING 8 LINES
-----------------------------------------------------------------------------------------------------------
  5 | WARNING | [ ] Line exceeds 80 characters; contains 147 characters
  9 | WARNING | [ ] Line exceeds 80 characters; contains 156 characters
 11 | WARNING | [ ] Line exceeds 80 characters; contains 178 characters
 13 | WARNING | [ ] Line exceeds 80 characters; contains 174 characters
 17 | WARNING | [ ] Line exceeds 80 characters; contains 173 characters
 34 | WARNING | [ ] Line exceeds 80 characters; contains 121 characters
 37 | WARNING | [ ] Line exceeds 80 characters; contains 132 characters
 42 | ERROR   | [x] Expected 1 newline at end of file; 2 found
-----------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
-----------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/src/Plugin/Field/FieldWidget/TreeWidget.php
----------------------------------------------------------------------------------------------------------------------------------------------
FOUND 6 ERRORS AND 4 WARNINGS AFFECTING 10 LINES
----------------------------------------------------------------------------------------------------------------------------------------------
   9 | ERROR   | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\Core\Field\FieldItemListInterface.
  60 | ERROR   | [x] Array indentation error, expected 6 spaces but found 8
  61 | ERROR   | [x] Array indentation error, expected 6 spaces but found 8
  62 | ERROR   | [x] Array indentation error, expected 6 spaces but found 8
  63 | ERROR   | [x] Array indentation error, expected 6 spaces but found 8
  64 | ERROR   | [x] Array closing indentation error, expected 4 spaces but found 6
  95 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
  99 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
 100 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
 101 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
----------------------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 6 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/src/Element/TermReferenceFancytree.php
----------------------------------------------------------------------------------------------------------------------------------------
FOUND 2 ERRORS AND 2 WARNINGS AFFECTING 4 LINES
----------------------------------------------------------------------------------------------------------------------------------------
   8 | ERROR   | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\Component\Utility\Html.
 159 | WARNING | [x] '@Todo check if we need this.' should match the format '@todo Fix problem X here.'
 271 | WARNING | [x] The variable name should be defined after the type
 273 | ERROR   | [x] Expected one space after the comma, 0 found
----------------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 4 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------------------------------------------------------------------------


FILE: /Users/PrometInterns/Demo-site/drupal-orgissue/web/modules/contrib/term_reference_fancytree/src/Controller/SubTreeController.php
---------------------------------------------------------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
---------------------------------------------------------------------------------------------------------------------------------------------------------
 10 | ERROR | [x] Use statements should be sorted alphabetically. The first wrong one is Drupal\term_reference_fancytree\Element\TermReferenceFancytree.
---------------------------------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
---------------------------------------------------------------------------------------------------------------------------------------------------------

Time: 295ms; Memory: 12MB

Kindly check

Thanks,
Jake

There are still PHP_CodeSniffer errors to fix.

avpaderno → changed the visibility of the branch 3348621-gitlab-ci-reports to hidden.