merge update urls and include app short name in distro

ModpackUpdater.Apps.Client.Gui/MainForm.axaml.cs

@@ -306,7 +306,7 @@ public partial class MainForm : Window
 
     private async void MainForm_Loaded(object? sender, RoutedEventArgs e)
     {
-        var updates = new AppUpdates(Program.UpdateUrl, this);
+        var updates = new AppUpdates("manager", this);
         updates.OnDownloadProgramUpdate += (_, _) => SetStatus(GeneralLangRes.DownloadProgramUpdate, AppGlobals.Symbols.GetImageSource(AppSymbols.software_installer)); 
         await updates.UpdateApp();
         ClearStatus();