[Site Bug] Issue with the page: /self-hosted/latest/tooling/install-toolkit/

I am trying to install timescaledb-toolkit-postgresql-16  on Ubuntu 20.04 and  i faced the issue below:

(Package timescaledb-toolkit-postgresql-16 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package 'timescaledb-toolkit-postgresql-16' has no installation candidate )