docs: update devtools require version

Author: jsun969

README.md

@@ -8,7 +8,7 @@
 ## Requirement
 
 - [react-hook-form](https://github.com/react-hook-form/react-hook-form) >= `7.33.1`
-- [@hookform/devtools](https://github.com/react-hook-form/devtools) >= `4.2.0`
+- [@hookform/devtools](https://github.com/react-hook-form/devtools) >= `4.2.2`
 
 ## Usage