Update comment in Desktop template

[mysteryx93]

Describe the bug

Desktop project template contains this

<!--If you are willing to use Windows/MacOS native APIs you will need to create 3 projects.
One for Windows with net7.0-windows TFM, one for MacOS with net7.0-macos and one with net7.0 TFM for Linux.-->

I think that a better approach is to specify multiple TargetFrameworks and use #IF blocks. The above comment can be misleading.

To Reproduce

Create a blank cross-platform project

Avalonia Templates version

11.0.0

Avalonia version

11.0.0

Additional context

No response

[maxkatz6]

I think that a better approach is to specify multiple TargetFrameworks and use #IF blocks

It would be a better approach by default, if there was "net6.0-linux" tfm. Otherwise it's just another misleading solution.

With net8.0 release and net8.0-browser availability we likely to have yet another template with a single project, we will see how it goes then.

[mysteryx93]

Perhaps just put a link to a page explaining the various options?