design/draft-workspace: provide more information about some workflows
design/draft-workspace: provide more information about some workflows

Change-Id: I2166a289409c30de1d305f2aca8d5406dc1d7c3f
Reviewed-on: https://go-review.googlesource.com/c/proposal/+/312752
Trust: Michael Matloob <4562438b12c14e81a47550acde616ff328a909f8@golang.org>
Run-TryBot: Michael Matloob <4562438b12c14e81a47550acde616ff328a909f8@golang.org>
Reviewed-by: Michael Matloob <4562438b12c14e81a47550acde616ff328a909f8@golang.org>

golang/proposal,golang/proposal