doc: add joyeecheung to collaborators

PR-URL: #10603
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: joyeecheung

README.md

@@ -253,6 +253,8 @@ more information about the governance of the Node.js project, see
 **João Reis** <reis@janeasystems.com>
 * [joshgav](https://github.com/joshgav) -
 **Josh Gavant** <josh.gavant@outlook.com>
+* [joyeecheung](https://github.com/joyeecheung) -
+**Joyee Cheung** <joyeec9h3@gmail.com>
 * [julianduque](https://github.com/julianduque) -
 **Julian Duque** <julianduquej@gmail.com>
 * [JungMinu](https://github.com/JungMinu) -