doc: clarify ERR_AMBIGUOUS_ARGUMENT

PR-URL: https://github.com/nodejs/node/pull/22542


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>