Minor - use @Symfony when using phpcs for flintci

.php_cs.dist

@@ -83,9 +83,8 @@ $finder = PhpCsFixer\Finder::create()
 return PhpCsFixer\Config::create()
     ->setRules(
         [
-            '@PSR2' => true,
-            //'strict_param' => true,
-            'array_syntax' => ['syntax' => 'short'],
+            '@Symfony' => true,
+            'array_syntax' => ['syntax' => 'short']
         ]
     )
     ->setFinder($finder);