doc: add missing worker error

ERR_TRANSFERRING_EXTERNALIZED_SHAREDARRAYBUFFER was missing from the
docs - add it there based on the wording Anna used in the her PR.

PR-URL: https://github.com/nodejs/node/pull/21947


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>