[release-branch.go1.12] doc: align documents link
Updates #33738
Change-Id: If0856d7c57ecfde08341c1aecb5e92361fd64f2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/191217
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
(cherry picked from commit
cded9f43f8d504159d9b71ddca7fe8abd8ba78b0)
Reviewed-on: https://go-review.googlesource.com/c/go/+/191748
Reviewed-by: Katie Hockman <katie@golang.org>