Fix missing permission in project example in acl docs
Fix missing permission in project example in acl docs

ttiurani/gsutil,mattdr/gsutil,chriskuehl/gsutil-debian,fishjord/gsutil,craigcitro/gsutil,GoogleCloudPlatform/gsutil,BrandonY/gsutil,GoogleCloudPlatform/gsutil,dimfeld/gsutil,dtjackson/gsutil