Fix missing word in docs.

Author: marshallswain

docs/2.0-major-release.md

@@ -816,7 +816,7 @@ export {
 
 With FeathersJS version 4, the user is returned in the authentication response, by default.  This means that it's no longer required to provide a `userService` option to populate the user. 👍
 
-If you would like to enable backwards compatibility with the previous version of Feathers, pass the below code in to the
+If you would like to enable backwards compatibility with the previous version of Feathers, pass the below code in the makeAuthPlugin.
 
 ```js
 makeAuthPlugin({