AppIDs must match config to properly display notification icon and title

src/electron-main.ts

@@ -600,4 +600,4 @@ app.on("second-instance", (ev, commandLine, workingDirectory) => {
 // installer uses for the shortcut icon.
 // This makes notifications work on windows 8.1 (and is
 // a noop on other platforms).
-app.setAppUserModelId("com.squirrel.element.desktop");
+app.setAppUserModelId("im.riot.app");