title: Cannot connect to concourse's slack inviter
body: <p>I tried clicking on the "Slack inviter" - see here: <a href="https://concourse-ci.org/community.html" rel="nofollow noreferrer">https://concourse-ci.org/community.html</a></p>
  
  <p>"404 Not Found: Requested route ('slack.concourse.ci') does not exist."</p>
  
  <p>Is this a temporary problem?</p>