Update bundles/configuration.rst

Co-authored-by: Oskar Stark <oskarstark@googlemail.com>

Author: smnandre

bundles/configuration.rst

@@ -279,7 +279,7 @@ In your extension, you can load this and dynamically set its arguments::
     :class:`Symfony\\Component\\HttpKernel\\DependencyInjection\\ConfigurableExtension`
     to do this automatically for you::
 
-        // src/DependencyInjection/AcmeHelloExtension.php
+        // src/DependencyInjection/HelloExtension.php
         namespace Acme\HelloBundle\DependencyInjection;
 
         use Symfony\Component\DependencyInjection\ContainerBuilder;