x/website/_content/doc: install page doesn't show darwin-arm64.pkg installer to Apple silicon users #43815
Description
When visiting https://golang.org/doc/install on an Apple silicon Mac (tested on Safari and Chrome), that page displays only the darwin-amd64.pkg installer, not darwin-arm64.pkg one:
It should either show both, or if possible to tell the two macOS architectures apart, perhaps only the right one.
CC @golang/release, @stevetraut, @julieqiu.