doc: list largepage values in --help

This commit adds the supported --use-largepages values to
the --help menu.

PR-URL: https://github.com/nodejs/node/pull/31537
Fixes: https://github.com/nodejs/node/issues/31533


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>