Remove mistaken end from controller_path doc [ci skip]

actionpack/lib/abstract_controller/base.rb

@@ -88,7 +88,7 @@ def clear_action_methods!
       # Returns the full controller name, underscored, without the ending Controller.
       #
       #   class MyApp::MyPostsController < AbstractController::Base
-      #     end
+      #
       #   end
       #
       #   MyApp::MyPostsController.controller_path # => "my_app/my_posts"