The playground js was coming from
godoc instead of the updated copy in go.dev.
Change-Id: I26be8634b0e5d453b966be758f08c15b4bc7ca72
Reviewed-on: https://go-review.googlesource.com/c/website/+/366376
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Website-Publish: Russ Cox <rsc@golang.org>