Correct grammar in custom hook config explanation

Author: sds

README.md

@@ -185,8 +185,8 @@ Option                                  | Description
 In addition to the built-in configuration options, each hook can expose its
 own unique configuration options. The `AuthorEmail` hook, for example, allows
 you to customize the regex used to check commit author emails via the `pattern`
-option (useful if you want to enforce developers to use a company
-email address for their commits). This provides incredible flexibility for hook
+option---useful if you want to enforce that developers use a company
+email address for their commits. This provides incredible flexibility for hook
 authors as you can make your hooks sufficiently generic and then customize them
 on a per-project basis.