Update README.md

Minor fix in example code for `console-application.php`

Author: hepisec

README.md

@@ -92,6 +92,6 @@ For example, in a Symfony project, `console-application.php` would look somethin
 
 ```php
 require dirname(__DIR__).'/../config/bootstrap.php';
-$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
+$kernel = new \App\Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
 return new \Symfony\Bundle\FrameworkBundle\Console\Application($kernel);
 ```