verify Fixed php-symfony2's json test

php-symfony2/src/Skamander/BenchmarkBundle/Controller/BenchController.php

@@ -13,7 +13,7 @@ class BenchController extends Controller
 
     public function jsonAction()
     {
-        return new JsonResponse(array('message' => 'Hello World!'));
+        return new JsonResponse(array('message' => 'Hello, World!'));
     }
 
     public function dbAction(Request $request)