Update README.md for Fedora 41 users, having problems with the instal…

…lation

Since pam_python depends on python2 and python2 cannot be installed through fedoras repositories the installation will fail. The beta of Howdy has fixed this issue. 
This problem is also explained in the copr repo. But it requires some searching.

README.md

@@ -63,6 +63,14 @@ sudo dnf copr enable principis/howdy
 sudo dnf --refresh install howdy
 ```
 
+*Note:* Fedora 41 [removed support for Python2](https://fedoraproject.org/wiki/Changes/RetirePython2.7), but at this point in time Howdy still depends on it. If the install fails, you can fix this by installing the beta Repository and removing the release version:
+
+```
+sudo dnf copr remove principis/howdy
+sudo dnf copr enable principis/howdy-beta
+sudo dnf --refresh install howdy
+```
+
 See the link to the COPR repository for detailed configuration steps.
 
 ### openSUSE