experimental/documentation/gerrit.md: more tricks

NOTRY=true
Change-Id: I04d371b16f7805b4c972010a5bc1eebd979169a6
Reviewed-on: https://skia-review.googlesource.com/16915
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed