cmd/internal/doc: increase version of pkgsite doc command that's run

cmd/internal/doc: increase version of pkgsite doc command that's run

This will incorporate the changes in CL 675957, CL 677596, and
CL 675958.

For #73848

Change-Id: Ie3d313e055a36b5b7aafec4a7462a1ced8a9f923
Reviewed-on: https://go-review.googlesource.com/c/go/+/680176
Reviewed-by: Michael Matloob <matloob@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>