Vermeide Deprecation (Case 193321) (#41)

...durch Nutzung von
`Symfony\Component\DependencyInjection\Extension\Extension` an Stelle
von `Symfony\Component\HttpKernel\DependencyInjection\Extension`.

Author: relthyg

src/DependencyInjection/WebfactoryShortcodeExtension.php

@@ -5,8 +5,8 @@
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
 /**
  * Loads the bundle configuration.