Document component_render_options as internal API

Author: justin808

lib/react/rails/railtie.rb

@@ -121,6 +121,7 @@ def self.append_react_build_to_assets_version!(assets, react_build)
         versioned_assets.version = [versioned_assets.version, "react-#{react_build}"].compact.join("-")
       end
 
+      # :nodoc:
       def self.component_render_options(options, html)
         render_options = options.merge(inline: html)
         return render_options if render_options.key?(:layout)