[Koha] Koha on Ubuntu packages obsolete?

[Marty]

Hi all,
This is more of a general remark, on https://wiki.koha-community.org/wiki/Koha_on_ubuntu_-_packages it says: 
WARNING! This page is obsolete.

It is being archived for historical purposes. It may contain documentation which is not currently correct or which has been deprecated.

See Installation Documentation for current information.
However, if you click on Installation Documentation it sends you back to https://wiki.koha-community.org/wiki/Installation_Documentation, from where you get send back to where you came from. Kind of a catch-22.
I just assume it is current anyway
Marty