Document that a random set of users is returned if a file is owned by all users
Document that a random set of users is returned if a file is owned by all users

Signed-off-by: Edwin Kempin <d43fb6c98c97e553b671ed9a9318100f1de386e7@google.com>
Change-Id: Ie634e85270e283c73418af43c246b462adf0617e

GerritCodeReview/plugins_code-owners,GerritCodeReview/plugins_code-owners,GerritCodeReview/plugins_code-owners,GerritCodeReview/plugins_code-owners