net/http/httptest: add comment to Server.Client() about Server.URL
Updates #30774.
Change-Id: I9564f955b15c701bee27aa9fbf3972de8fdb55e4
GitHub-Last-Rev:
50bd6bd54ec4195ed9e09a4a2d69e386bf55b21f
GitHub-Pull-Request: golang/go#67037
Reviewed-on: https://go-review.googlesource.com/c/go/+/581777
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>