Fix the errors/warnings reported by PHP_CodeSniffer

I've fixed the phpcs issues, Please review the MR.
Thank you.

Hi @realsp,

I applied MR!1, it not applied smoothly but fixed most of the phpcs issues.

These are the remaining issues after I ran phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml:

➜  seo_pager git:(1.0.3) curl https://git.drupalcode.org/project/seo_pager/-/merge_requests/1.diff | patch -p1
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  8840    0  8840    0     0  20136      0 --:--:-- --:--:-- --:--:-- 20136
patching file README.md
patching file seo_pager.info.yml
patching file seo_pager.module
Hunk #2 FAILED at 36.
1 out of 2 hunks FAILED -- saving rejects to file seo_pager.module.rej
patching file seo_pager.services.yml
patching file src/SeoPagerService.php
➜  seo_pager git:(1.0.3) ✗ ..
➜  contrib phpcs --standard="Drupal,DrupalPractice" --extensions=php,module,inc,install,test,profile,theme,info,txt,md,yml,css,js seo_pager

FILE: /Users/interns/Demo-site/drupal-org-issues/web/modules/contrib/seo_pager/seo_pager.tokens.inc
-------------------------------------------------------------------------------------------------------------------------
FOUND 7 ERRORS AFFECTING 5 LINES
-------------------------------------------------------------------------------------------------------------------------
 26 | ERROR | [x] The first parameter of a multi-line function declaration must be on the line after the opening bracket
 27 | ERROR | [x] Multi-line function declaration not indented correctly; expected 2 spaces but found 26
 28 | ERROR | [x] Multi-line function declaration not indented correctly; expected 2 spaces but found 26
 29 | ERROR | [x] Multi-line function declaration not indented correctly; expected 2 spaces but found 26
 30 | ERROR | [x] Multi-line function declaration not indented correctly; expected 2 spaces but found 26
 30 | ERROR | [x] Multi-line function declarations must have a trailing comma after the last parameter
 30 | ERROR | [x] The closing parenthesis of a multi-line function declaration must be on a new line
-------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 7 MARKED SNIFF VIOLATIONS AUTOMATICALLY
-------------------------------------------------------------------------------------------------------------------------


FILE: /Users/interns/Demo-site/drupal-org-issues/web/modules/contrib/seo_pager/seo_pager.module
-----------------------------------------------------------------------------------------------
FOUND 15 ERRORS AFFECTING 14 LINES
-----------------------------------------------------------------------------------------------
 46 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 47 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 48 | ERROR | [x] Line indented incorrectly; expected 4 spaces, found 6
 49 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 50 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 51 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 52 | ERROR | [x] Line indented incorrectly; expected 4 spaces, found 6
 53 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 54 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 55 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 56 | ERROR | [x] Line indented incorrectly; expected 4 spaces, found 6
 57 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 4
 61 | ERROR | [x] You must use "/**" style comments for a function comment
 61 | ERROR | [x] Expected 1 space before opening brace; found 0
 63 | ERROR | [x] Expected 1 newline at end of file; 2 found
-----------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 15 MARKED SNIFF VIOLATIONS AUTOMATICALLY
-----------------------------------------------------------------------------------------------


FILE: /Users/interns/Demo-site/drupal-org-issues/web/modules/contrib/seo_pager/src/SeoPagerService.php
--------------------------------------------------------------------------------------------------------
FOUND 2 ERRORS AFFECTING 2 LINES
--------------------------------------------------------------------------------------------------------
 96 | ERROR | [x] Multi-line function declarations must have a trailing comma after the last parameter
 97 | ERROR | [x] Multi-line function declaration not indented correctly; expected 2 spaces but found 4
--------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------------------------------

Time: 164ms; Memory: 10MB

➜  contrib

Thank you.

Hi,

Pleae review MR!1. Thank you.