fixed phpdocs

src/Symfony/Bundle/FrameworkBundle/Command/AbstractConfigCommand.php

@@ -52,6 +52,9 @@ abstract class AbstractConfigCommand extends ContainerDebugCommand
         }
     }
 
+    /**
+     * @return ExtensionInterface
+     */
     protected function findExtension($name)
     {
         $bundles = $this->initializeBundles();

src/Symfony/Component/Config/Definition/ArrayNode.php

@@ -141,7 +141,7 @@ class ArrayNode extends BaseNode implements PrototypeNodeInterface
     }
 
     /**
-     * Whether extra keys should just be ignore without an exception.
+     * Whether extra keys should just be ignored without an exception.
      *
      * @param bool $boolean To allow extra keys
      * @param bool $remove  To remove extra keys