Markdown failed to render properly if there are multiple lines within the code block

Issue Summary

Markdown failed to render properly if there are multiple lines within the code block

Steps to Reproduce

1. Create Readme.md
2. Add the following markdown

   # Test
       ```sh
       # Test
       # Test
       sudo apt install 
   
       # Test
       # Test
       sudo apt-get update
       ```
   

Expected Results

The Markdown is properly render

Actual Results

The markdown is not render properly

Workaround

There Workaround is to split the code block into multiple part rather than one code block