doc/go1.22: announcing support address sanitizer on Loong64

doc/go1.22: announcing support address sanitizer on Loong64

Change-Id: Ide5eddc6c04347ada468bc8dd4c27d9b492cf0ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/550176
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: David Chase <drchase@google.com>