Fix typo in cmake config

Sine Striker

2024-02-23 fa380df5aa3a9c302760be3903eeebb6d866d8ee

 examples/mainwindow/mainwindow.h

@@ -30,6 +30,8 @@
protected:
    bool event(QEvent *event) override;

    void closeEvent(QCloseEvent *event) override;

private:
    void installWindowAgent();
    void loadStyleSheet(Theme theme);