DX: fix cs

src/Bundle/ChillEventBundle/Controller/ParticipationController.php

@@ -468,6 +468,7 @@ class ParticipationController extends AbstractController
 
     /**
      * @\Symfony\Component\Routing\Annotation\Route(path="/{_locale}/event/participation/{event_id}/update_multiple", name="chill_event_participation_update_multiple", methods={"POST"})
+     * @param mixed $event_id
      */
     public function updateMultipleAction($event_id, Request $request)
     {