This CL just updates an outdated comment.

Bug: v8:10982
Change-Id: I3ae60c9bf345b50c8e6fd7ce9c19ae9d0894734e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2539911
Commit-Queue: Vicky Kontoura <vkont@google.com>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71230}