doc: add legendecas to TSC list

Refs: nodejs/TSC#1282

Signed-off-by: Michael Dawson <mdawson@devrus.com>

PR-URL: #44662
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

README.md

@@ -178,6 +178,8 @@ For information about the governance of the Node.js project, see
   **James M Snell** <<jasnell@gmail.com>> (he/him)
 * [joyeecheung](https://github.com/joyeecheung) -
   **Joyee Cheung** <<joyeec9h3@gmail.com>> (she/her)
+* [legendecas](https://github.com/legendecas) -
+  **Chengzhong Wu** <<legendecas@gmail.com>> (he/him)
 * [mcollina](https://github.com/mcollina) -
   **Matteo Collina** <<matteo.collina@gmail.com>> (he/him)
 * [mhdawson](https://github.com/mhdawson) -