[ticket/11497] Fix the path for the finder in controller_provider

PHPBB3-11497

phpBB/phpbb/controller/provider.php

@@ -51,7 +51,7 @@ class provider
 		// We hardcode the path to the core config directory
 		// because the finder cannot find it
 		$this->routing_files = array_merge($this->routing_files, array('config/routing.yml'), array_keys($finder
-				->directory('config')
+				->directory('/config')
 				->suffix('routing.yml')
 				->find()
 		));