crypto/tls: relax the docs of InsecureSkipVerify
crypto/tls: relax the docs of InsecureSkipVerify

Fixes #39074

Change-Id: I72ec95f4b190253bb82d52a03a769b0399170b93
Reviewed-on: https://go-review.googlesource.com/c/go/+/239746
Reviewed-by: Katie Hockman <e321a8fd89c4908465ddaf8d5d0d62480efacb63@golang.org>

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