fix version

Zhao Yuhang

2024-09-10 f93657fa82bdd37dba68ea962d5e9b2cf4fd4d60

 examples/mainwindow/mainwindow.cpp

@@ -60,8 +60,7 @@
    setWindowTitle(tr("Example MainWindow"));
    resize(800, 600);

    setFixedHeight(600);

    // setFixedHeight(600);
    // windowAgent->centralize();
}