doc: add kvakil to triagers

I am volunteering to be a triager. I'd like to become more involved,
help users with their issues, and eventually become a collaborator.

I've understood & agree to the code of conduct.

PR-URL: #43996
Reviewed-By: Feng Yu <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>
Reviewed-By: Mohammed Keyvanzadeh <[email protected]>
Reviewed-By: Qingyu Deng <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Mestery <[email protected]>
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>

Author: kvakil

README.md

@@ -658,6 +658,8 @@ maintaining the Node.js project.
   **Himadri Ganguly** <<[email protected]>> (he/him)
 * [iam-frankqiu](https://github.com/iam-frankqiu) -
   **Frank Qiu** <<[email protected]>> (he/him)
+* [kvakil](https://github.com/kvakil) -
+  **Keyhan Vakil** <<[email protected]>> (they/them)
 * [marsonya](https://github.com/marsonya) -
   **Akhil Marsonya** <<[email protected]>> (he/him)
 * [meixg](https://github.com/meixg) -