[calamares] Update documentation and donation URLs

The ones in branding are just an example.

src/branding/default/branding.desc

@@ -129,10 +129,10 @@ strings:
     shortVersionedName:  FancyGL 2023.3
     bootloaderEntryName: FancyGL
     productUrl:          https://calamares.io/
-    supportUrl:          https://github.com/calamares/calamares/wiki
-    knownIssuesUrl:      https://github.com/calamares/calamares/issues
+    supportUrl:          https://codeberg.org/Calamares/calamares/wiki
+    knownIssuesUrl:      https://codeberg.org/Calamares/calamares/issues
     releaseNotesUrl:     https://calamares.io/news/
-    donateUrl:           https://kde.org/community/donations/index.php
+    donateUrl:           https://docs.codeberg.org/improving-codeberg/donate/
 
 # These images are loaded from the branding module directory.
 #

src/calamares/main.cpp

@@ -120,7 +120,7 @@ main( int argc, char* argv[] )
                           QString(),
                           QString(),
                           "https://calamares.io",
-                          "https://github.com/calamares/calamares/issues" );
+                          "https://codeberg.org/Calamares/calamares/issues" );
     KAboutData::setApplicationData( aboutData );
     a.setApplicationDisplayName( QString() );  // To avoid putting an extra "Calamares/" into the log-file