Clarify wording about which distributions will work with "Packages"

[daikema]

At the moment if you select packages you're given a choice of "Ubuntu" or "RHEL8/9 / AlmaLinux 8/9".

It's likely that the Ubuntu packages will work under other DEB-based distributions like Mint Linux, and that the "RHEL" packages will work for a broader variety of RPM-based distributions (e.g. Rocky Linux), so it might be helpful if the descriptions were updated to clarify this.

[confluence]

I will think about appropriate but not too verbose wording, and submit a PR.