doc: add pronouns for tniessen to README

PR-URL: #40412
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Zijian Liu <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: tniessen

README.md

@@ -202,7 +202,7 @@ For information about the governance of the Node.js project, see
 * [targos](https://github.com/targos) -
   **Michaël Zasso** \<[email protected]> (he/him)
 * [tniessen](https://github.com/tniessen) -
-  **Tobias Nießen** \<[email protected]>
+  **Tobias Nießen** \<[email protected]> (he/him)
 * [Trott](https://github.com/Trott) -
   **Rich Trott** \<[email protected]> (he/him)
 
@@ -438,7 +438,7 @@ For information about the governance of the Node.js project, see
 * [TimothyGu](https://github.com/TimothyGu) -
   **Tiancheng "Timothy" Gu** \<[email protected]> (he/him)
 * [tniessen](https://github.com/tniessen) -
-  **Tobias Nießen** \<[email protected]>
+  **Tobias Nießen** \<[email protected]> (he/him)
 * [trivikr](https://github.com/trivikr) -
   **Trivikram Kamat** \<[email protected]>
 * [Trott](https://github.com/Trott) -