He->they

Bug: b/162834212
Change-Id: I8559120ad77006aaa839b70e00b4c8f12e9e8a44
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2364192Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>