net: update document on limitation of iprawsock on Windows
Fixed: #23209
Change-Id: I3bfe9f5192cbacf387386efda72f04eeec5ff3be
GitHub-Last-Rev:
660a62d139dda21fcaea1e95394ca38521c7f00a
GitHub-Pull-Request: golang/go#74857
Reviewed-on: https://go-review.googlesource.com/c/go/+/692895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sean Liao <sean@liao.dev>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Sean Liao <sean@liao.dev>