Windows installation instructions in README need minor correction

[mfncooper]

The instructions for installing on Windows, here:

https://github.com/wb2osz/direwolf?tab=readme-ov-file#windows

state:

Go to the releases page. Download a zip file with "win" in its name

However, since Direwolf 1.6, the downloadable files no longer have "win" in the name.