Provided more links and steps per earlier advice from geofflang@.

Bug: angleproject:4842
No-Try: true
Change-Id: I9c9361b4b71a63fd36f79a87d45e0f4b04c4140c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2297528
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>