Replace link to getConfiguration method

In my opinion, the link should redirect to the class where we can preview the method that must be overridden.

Author: sebpacz

bundles/configuration.rst

@@ -334,7 +334,7 @@ As long as your bundle's configuration is located in the standard location
 (``YourBundle\DependencyInjection\Configuration``) and does not have
 a constructor it will work automatically. If you
 have something different, your ``Extension`` class must override the
-:method:`Extension::getConfiguration() <Symfony\\Component\\HttpKernel\\DependencyInjection\\Extension::getConfiguration>`
+:method:`Extension::getConfiguration() <Symfony\\Component\\DependencyInjection\\Extension\\Extension::getConfiguration>`
 method and return an instance of your ``Configuration``.
 
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