The line spacing is too narrow when a check list item has a line break

Especially for Chinese
![20240519-141239](https://github.com/devchat-ai/devchat/assets/75999237/23439e7e-4a7a-4273-b581-e9f376b63f35)
![20240519-141244](https://github.com/devchat-ai/devchat/assets/75999237/15d2eba6-5390-4af7-8fb2-730e70a072c1)
