Fix some phpdocs for Twig extensions & templating helpers

Author: stloyd

Templating/Helper/ActionsHelper.php

@@ -58,9 +58,7 @@ public function controller($controller, $attributes = array(), $query = array())
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {

Templating/Helper/CodeHelper.php

@@ -205,9 +205,7 @@ public function formatFileFromText($text)
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {

Templating/Helper/RequestHelper.php

@@ -59,9 +59,7 @@ public function getLocale()
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {

Templating/Helper/RouterHelper.php

@@ -50,9 +50,7 @@ public function generate($name, $parameters = array(), $referenceType = UrlGener
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {

Templating/Helper/SessionHelper.php

@@ -62,9 +62,7 @@ public function hasFlash($name)
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {

Templating/Helper/TranslatorHelper.php

@@ -50,9 +50,7 @@ public function transChoice($id, $number, array $parameters = array(), $domain =
     }
 
     /**
-     * Returns the canonical name of this helper.
-     *
-     * @return string The canonical name
+     * {@inheritdoc}
      */
     public function getName()
     {