### Expected
https://spec.commonmark.org/dingus/?text=-%20%60%60%60rs%0A%20%20let%20x%20%3D%203%3B%0A%20%20%60%60%60%0A
### Actual
![Screenshot_20240330_154239](https://github.com/lampsitter/egui_commonmark/assets/96946613/901536a5-5969-4efe-bac8-78b4d4d801a0)
Discovered from a picture in #43
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