Link in repo sidebar is broken.

[Nooshu]

Low-priority change. The https://tdt-documentation.london.cloudapps.digital/ link in this repositories sidebar is currently broken:

This site can’t be reached
Check if there is a typo in tdt-documentation.london.cloudapps.digital.
DNS_PROBE_FINISHED_NXDOMAIN

I am not sure if it needs updating or is no longer relevant?

[two-first-names]

Hey, yup. That site hasn't existed for some time since GOV.UK PaaS was decommissioned. As far as I'm aware, it was never replaced (though the source is still available at https://github.com/alphagov/tdt-documentation) - I'll discuss with others but likely end up removing it. :) Thank you!