Revert "doc: move ronkorving to emeritus"

This reverts commit c5ef4389.

Ron emailed asking to be reinstated.

PR-URL: https://github.com/nodejs/node/pull/34507


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>