Markdown emoji code may not display well inside fenced code blocks

[Yarakashi-Kikohshi]

Thank you very much for the very nice extension. 👍

If you write Markdown emoji code inside fenced code blocks with a specified language, the code will not display well.

To reproduce

Consider three cases. :smile: doesn't display well in fenced code blocks with a specified language.

• If markdown is specified.

  ```markdown
  smile emoji → :smile:

  
  ![image](https://github.com/simov/markdown-viewer/assets/75878492/c892b5a3-879e-4f0a-9d82-72366d850f1b)

• If languages other than markdown is specified, e.g. python.

  ```python
  print(":smile:")

  
  ![image](https://github.com/simov/markdown-viewer/assets/75878492/145c8c91-450e-4e8f-9694-66dc884ae2f9)

• If no language is specified.

  :smile:

  

This issue does not occur when trying to display non-existent Markdown emoji code.

```markdown
:no_emoji:

![image](https://github.com/simov/markdown-viewer/assets/75878492/43410d27-c500-4ba8-8a29-743e8e06ffd4)

## Version

- Markdown Viewer: 5.1
- Microsoft Edge: 113.0.1774.50

[simov]

This bug got fixed in v5.3, let me know if you find anything else.

[Yarakashi-Kikohshi]

I am sorry for the late reply.

Thank you for resolving the issue! :tada:

Other than this issue, the v5.3 update is very attractive. I love this extension even more.