[anti-censorship-team] IRC keywords to reach anti-censorship team

Other teams have started to use IRC keywords to reach team members, e.g.: "network-team: somebody review #foo". We discussed this in today's meeting and agreed to use both "ac-team" and "anti-censorship-team" for our team: <http://meetbot.debian.net/tor-meeting/2019/tor-meeting.2019-11-14-18.00.html> Cheers, Philipp