Oven door etched/scratched my Mr Muscle oven cleaner – how do I removed etching?

Fist off, I now know not to use Mr Muscle on it. Whirlpool say dont use it Mr Muscle said check with maker.

Anyway, it has some slight marking of the outer oven glass door, and if you run your finger nail over it in part you can feel some roughness.

Any sugestions?