doc: fix version number for DEP006

PR-URL: https://github.com/nodejs/node/pull/37231


Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Pooja D P <Pooja.D.P@ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>