Markdown: doesn't render tables in the preview

## Describe the bug
The markdown previewer doesn't render tables properly.

## Screenshots 
![Screenshot 2024-07-17 at 14 34 56](https://github.com/user-attachments/assets/9b430f08-59bb-464c-a75d-fd663eb8a0cf)

### Example File:
[README.md](https://github.com/user-attachments/files/16265617/README.md)


