When visiting a D8 status report without cron correctly set up, you are pointed to drupal.org/cron, which redirect to the D7 help for cron. From there, there's no link to the D8 help or I couldn't failed, until I changed "7" for "8" in the URL.
I think that's not obvious for people not used to Drupal documentation pages, and at this point I think we should point directly to the D8 version of that documentation.