scheduled_maintenance: Link to StatusPage, not the old GOV.UK blog
scheduled_maintenance: Link to StatusPage, not the old GOV.UK blog

- We moved away from updating the GOV.UK blog a while ago. If any users
  got to this page during scheduled maintenance and clicked through, they
  would have then had to click another link to get to the reason for the
  maintenance.

alphagov/static,alphagov/static,alphagov/static