Resolve #3427555 "Fix GitLab CI pipelines (phpstan and cspell)"

Closes #3427555

js/search_api_autocomplete.js

 /**
  * @file
- * Expands the behaviour of the default autocompletion.
+ * Expands the behavior of the default autocompletion.
  */
 
 (($, Drupal, drupalSettings, once) => {