When there is a list in a markdown cell, there is a missing `\n` at the end of the list in the generated markdown. The results looks like this <img width="1197" alt="Screenshot 2023-03-26 at 22 38 23" src="https://user-images.githubusercontent.com/151693/227803295-79df914a-6637-4ff8-85ce-a193af4c3370.png"> whereas it should look like <img width="1177" alt="Screenshot 2023-03-26 at 22 38 53" src="https://user-images.githubusercontent.com/151693/227803320-89d1c8a9-555d-40fd-98fe-9907ac4e65c4.png"> an extra `\n` is needed