ssa: comment Sdom() with the form "Sdom..."
ssa: comment Sdom() with the form "Sdom..."

Change-Id: I7ddb3d178e5437a7c3d8e94a089ac7a476a7dc85
GitHub-Last-Rev: bc27289128079f294ec149ccc4539ad29b859c9f
GitHub-Pull-Request: golang/go#41925
Reviewed-on: https://go-review.googlesource.com/c/go/+/261437
Trust: Alberto Donizetti <90b16103a35511ced020676f3544f17117fb4c92@gmail.com>
Reviewed-by: Keith Randall <8c99c3a9284e493be632950b84cd789d08ed3e9d@golang.org>

CAFxX/go,nawawi/go,cloudflare/go,cloudflare/go,CAFxX/go,golang/go,golang/go,nawawi/go,CAFxX/go,nawawi/go,nawawi/go,golang/go,nawawi/go,CAFxX/go,nawawi/go,nawawi/go,cloudflare/go,golang/go,golang/go,nawawi/go,CAFxX/go,golang/go,CAFxX/go,golang/go,golang/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,CAFxX/go,cloudflare/go,CAFxX/go