Switch service-checker to check URL that 404s reliably
Switch service-checker to check URL that 404s reliably

Previous URL was redirecting, resulting in a 200
response instead of a 404

Bug: T259469
Change-Id: Ic78e4416d25ac59d7f2c29e26ed9cd75094f9835

wikimedia/citoid,wikimedia/citoid,wikimedia/citoid