Add Gitlab CI

Closes #3491632

src/Annotation/Required.php

@@ -32,7 +32,7 @@ class Required extends Plugin {
   /**
    * A brief description of the api.
    *
-   * @var \Drupal\Core\Annotation\Translationoptional
+   * @var \Drupal\Core\Annotation\Translation
    *
    * @ingroup plugin_translatable
    */