`config.generators` should be docummented since it is public API

[ci skip]

railties/lib/rails/engine/configuration.rb

@@ -26,7 +26,7 @@ def initialize(root=nil)
       #
       #   config.generators.colorize_logging = false
       #
-      def generators #:nodoc:
+      def generators
         @generators ||= Rails::Configuration::Generators.new
         yield(@generators) if block_given?
         @generators