doc: add gurgunday to collaborators

PR-URL: #61094
Fixes: #60921
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: gurgunday

README.md

@@ -337,6 +337,8 @@ For information about the governance of the Node.js project, see
   **Geoffrey Booth** <<webadmin@geoffreybooth.com>> (he/him)
 * [gireeshpunathil](https://github.com/gireeshpunathil) -
   **Gireesh Punathil** <<gpunathi@in.ibm.com>> (he/him)
+* [gurgunday](https://github.com/gurgunday) -
+  **Gürgün Dayıoğlu** <<hey@gurgun.day>> (he/him)
 * [guybedford](https://github.com/guybedford) -
   **Guy Bedford** <<guybedford@gmail.com>> (he/him)
 * [H4ad](https://github.com/H4ad) -