cmd/golangorg: use F4 instance on go.dev too
cmd/golangorg: use F4 instance on go.dev too

Eventually go.dev will use F4 instances, and we seem to be
running into out-of-memory or other resources problems
on the current go-discovery instances, so bump them to
remove that variable.

Change-Id: Iee456b0070e2d3e025ead9286f7610f9da29cac3
Reviewed-on: https://go-review.googlesource.com/c/website/+/343937
Trust: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
Run-TryBot: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
TryBot-Result: Go Bot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Julie Qiu <8d32267b6b4884cf35adeaccde2b6857ae11aace@golang.org>
Website-Publish: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website