Merge pull request #24075 from y-yagi/fix_typo

fix typo in attribute example [ci skip]

activerecord/lib/active_record/attributes.rb

@@ -119,7 +119,7 @@ module ClassMethods
       #
       #   class MoneyType < ActiveRecord::Type::Integer
       #     def cast(value)
-      #       if !value.kind_of(Numeric) && value.include?('$')
+      #       if !value.kind_of?(Numeric) && value.include?('$')
       #         price_in_dollars = value.gsub(/\$/, '').to_f
       #         super(price_in_dollars * 100)
       #       else