doc: add DavidCai1993 to collaborators

PR-URL: #12435
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Author: DavidCai1111

README.md

@@ -251,6 +251,8 @@ more information about the governance of the Node.js project, see
 **Claudio Rodriguez** <cjrodr@yahoo.com>
 * [danbev](https://github.com/danbev) -
 **Daniel Bevenius** <daniel.bevenius@gmail.com>
+* [DavidCai1993](https://github.com/DavidCai1993) -
+**David Cai** <davidcai1993@yahoo.com> (he/him)
 * [edsadr](https://github.com/edsadr) -
 **Adrian Estrada** <edsadr@gmail.com> (he/him)
 * [eljefedelrodeodeljefe](https://github.com/eljefedelrodeodeljefe) -