List downloadable versions (Trixie, Bookworm, Forky) more clear

[StephanStS]

The three downloadable Debian versions shall be listed more clear.
Some users thought, only Bookworm would be available, the text All image downloads incl. Debian 12 Bookworm was somehow misunderstandable.

[StephanStS]

Now it appears as:

[MichaIng]

Maybe make somehow clear that "stable" images can be downloaded from the SBC tiles below, and browsing "all downloads" is only needed if someone requires oldstable or testing? I would like to avoid people browsing the full list for no reason, but move this more into background somehow.

Everyone should download Trixie images as linked from the download page. Bookworm is still supported, but should not be used without a strong reason that cannot be worked around. And testing, especially at the early stage it is, should be really only used by people who know how to deal with breaking config changes, manual migrations of e.g. PHP and Python settings/software to new versions, accept regular dietpi-software option breakage due to changed package structure and all such.

[StephanStS]

Now it appears as: