Fix readme code example

README.md

@@ -76,6 +76,8 @@ Windows apps should be as fast and as easy to install and update as apps like Go
 
 7. Update your app periodically with UpdateManager.
    ```cs
+   private static void UpdateMyApp()
+   {
       using var mgr = new UpdateManager("https://the.place/you-host/updates");
       var newVersion = await mgr.UpdateApp();
       
@@ -83,6 +85,7 @@ Windows apps should be as fast and as easy to install and update as apps like Go
       if (newVersion != null) {
          UpdateManager.RestartApp();
       }
+   }
    ```
 
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