doc: add Yihong Wang to collaborators

Signed-off-by: Yihong Wang <yh.wang@ibm.com>

PR-URL: https://github.com/nodejs/node/pull/18824
Refs: https://github.com/nodejs/node/issues/18533
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

README.md

@@ -514,6 +514,8 @@ For more information about the governance of the Node.js project, see
 **Jeremy Whitlock** <jwhitlock@apache.org>
 * [XadillaX](https://github.com/XadillaX) -
 **Khaidi Chu** <i@2333.moe> (he/him)
+* [yhwang](https://github.com/yhwang) -
+**Yihong Wang** <yh.wang@ibm.com>
 * [yorkie](https://github.com/yorkie) -
 **Yorkie Liu** <yorkiefixer@gmail.com>
 * [yosuke-furukawa](https://github.com/yosuke-furukawa) -