Fix code comment to reflect its intent.

actionpack/lib/action_controller/metal/responder.rb

@@ -90,7 +90,7 @@ module ActionController #:nodoc:
   #
   #   def create
   #     @project = Project.find(params[:project_id])
-  #     @task = @project.comments.build(params[:task])
+  #     @task = @project.tasks.build(params[:task])
   #     flash[:notice] = 'Task was successfully created.' if @task.save
   #     respond_with(@project, @task, :status => 201)
   #   end