Merge pull request #5407 from homakov/patch-1

'module' is reserved word. Sample of code with error - not cool.

actionpack/lib/action_controller/base.rb

@@ -174,8 +174,8 @@ class Base < Metal
     # Shortcut helper that returns all the ActionController modules except the ones passed in the argument:
     #
     #   class MetalController
-    #     ActionController::Base.without_modules(:ParamsWrapper, :Streaming).each do |module|
-    #       include module
+    #     ActionController::Base.without_modules(:ParamsWrapper, :Streaming).each do |left|
+    #       include left
     #     end
     #   end
     #