Fix typo in Emulator_Options_Window.ui

[gogoprog]

[GermanAizek]

@gogoprog many thanks for contributing! I merge your commit in active AQEMU Qt6 fork. I'm going to port AQEMU to Windows, it used to work but stopped. And it is also possible to fix bugs and rewrite to simpler QML code, widgets have too much .ui and C++ code. Weblate integration will be used for translation. https://github.com/AQEMU/aqemu/commit/7e51b21502b5e923b7a563534f8ab37a24a7cf8c I did not touch your authorship commit.