Doc: Update Qt Quick app tutorial

The wizard and UI have changed.

Change-Id: I43d9101abdcfec362746b069509293df2317ae99
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

doc/examples/transitions/main.cpp

@@ -3,10 +3,11 @@
 
 int main(int argc, char *argv[])
 {
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
     QGuiApplication app(argc, argv);
 
     QQmlApplicationEngine engine;
-    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
+    engine.load(QUrl(QLatin1String("qrc:/main.qml")));
 
     return app.exec();
 }