URL special characters are not properly escaped

[MathiasVDA]

Describe the bug
When adding a markdown link like this:

'[Link text](https://link.to.my.domain/#/pagename)'

The rendering of the pdf will fail because the character # is not properly escaped. This also happens when the URL is encoded so that spaces are replaced with %20

To Reproduce
Add a markdown link with the character # or % to the yaml file

[bvahdat]

I also ran into the same problem and as a quick fix just escaped the hashtag through \#.

[MathiasVDA]

Yes, that's where i did as well after having to search for a bit. Then I created this issue so that it can be fixed and the next person will not have this issue