GoUsers: add Pethost Change-Id: I94fdceffa407e04f0088921d348acfe237599945 GitHub-Last-Rev: 170c14ff877eaa6f94b6b98fa80d2ff88f75635d GitHub-Pull-Request: golang/wiki#111 Reviewed-on: https://go-review.googlesource.com/c/wiki/+/849885 Reviewed-by: Sean Liao <sean@liao.dev>