doc: add Aditi-1400 to collaborators

Fixes: nodejs#59064
PR-URL: nodejs#59157
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

Author: Aditi-1400

README.md

@@ -289,6 +289,8 @@ For information about the governance of the Node.js project, see
   **Abdirahim Musse** <<abdirahim.musse@ibm.com>>
 * [addaleax](https://github.com/addaleax) -
   **Anna Henningsen** <<anna@addaleax.net>> (she/her)
+* [Aditi-1400](https://github.com/Aditi-1400) -
+  **Aditi Singh** <<aditisingh1400@gmail.com>> (she/her)
 * [aduh95](https://github.com/aduh95) -
   **Antoine du Hamel** <<duhamelantoine1995@gmail.com>> (he/him) - [Support me](https://github.com/sponsors/aduh95)
 * [anonrig](https://github.com/anonrig) -