Refactor configuration check

plugins/services.php

@@ -1,7 +1,11 @@
 <?php
 
+// This file is automatically generated, please do not edit it.
+// To update configuration, use bin/console plugins:* commands.
+
 use Alchemy\Phrasea\Application;
 
 return call_user_func(function (Application $app) {
+
     return $app;
 }, $app);