doc: fixup lutimes metadata

Refs: https://github.com/nodejs/node/pull/35320#discussion_r493912423

PR-URL: https://github.com/nodejs/node/pull/35328


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>