AS guide: errata

guides/source/active_support_core_extensions.md

@@ -421,7 +421,7 @@ NOTE: Defined in `active_support/core_ext/object/with_options.rb`.
 
 ### JSON support
 
-Active Support provides a better implementation of `to_json` than the +json+ gem ordinarily provides for Ruby objects. This is because some classes, like +Hash+, +OrderedHash+ and +Process::Status+ needs special handling in order to provide a proper JSON representation.
+Active Support provides a better implementation of `to_json` than the +json+ gem ordinarily provides for Ruby objects. This is because some classes, like +Hash+, +OrderedHash+, and +Process::Status+ need special handling in order to provide a proper JSON representation.
 
 NOTE: Defined in `active_support/core_ext/object/json.rb`.