Fix the issues reported by phpcs

The issue summary should always describe what the issue is trying to fix and, in the case, of coding standards issues, show which command has been used, which arguments have been used, and which report that command shown.

Issue summary updated.

+The module requires drupal/barcodes and tecnickcom/tc-lib-barcode.
+    For tecnickcom/tc-lib-barcode, the general packagist repo may be necessary.

The last line does not need to be indented.

+  /**
+   * The alias manager.
+   *
+   * @var Drupal\Core\Session\AccountInterface
+   */
+  protected $currentUser;

The description is not correct.

- *   constraints = {"LinkType" = {}, "LinkAccess" = {}, "LinkExternalProtocols" = {}, "LinkNotExistingInternal" = {}}
+ *   constraints = {"LinkType" = {}, "LinkAccess" = {},
+ *   "LinkExternalProtocols" ={},"LinkNotExistingInternal" = {}}

The changed lines are not correctly formatted.

-    if (!empty($entity) && in_array($entity->getEntityTypeId(), ['node', 'taxonomy_term', 'user', 'redirect'])) {
+    if (!empty($entity) && in_array($entity->getEntityTypeId(), [
+      'node',
+      'taxonomy_term',
+      'user', 'redirect',
+    ])) {
       $value = $entity->autoshortqr->view([

Control structure conditions may exceed 80 characters, if they are simple to read and understand → .

Please review.