Some links are not working inside the sidebar

[filippogambarota]

I've tried with different wiki repo and there are some links inside the sidebar that are not rendered in the html file.
For example this is the VScode wiki

git clone https://github.com/microsoft/vscode.wiki.git

Then I used the code:

gwtc ./vscode.wiki

And the final html has the Extension-API-Guidelines files with corrupted link. Inside the _sidebar.md file I noticed that the link[[]]is written in capital letters instead it is lowercase in the folder.