Upgrade Twig library

inc/lib/Twig/TokenParser/Spaceless.php

@@ -50,7 +50,7 @@ class Twig_TokenParser_Spaceless extends Twig_TokenParser
     /**
      * Gets the tag name associated with this token parser.
      *
-     * @param string The tag name
+     * @return string The tag name
      */
     public function getTag()
     {