Fix comment in `check_class_collision` [ci skip]

`ScaffoldBase` was changed to `ResourceHelpers` by 0efedf2a.

railties/lib/rails/generators/named_base.rb

@@ -221,7 +221,7 @@ def mountable_engine? # :doc:
         #
         def self.check_class_collision(options = {}) # :doc:
           define_method :check_class_collision do
-            name = if respond_to?(:controller_class_name) # for ScaffoldBase
+            name = if respond_to?(:controller_class_name) # for ResourceHelpers
               controller_class_name
             else
               class_name