Given ...

... the following markdown wiki links (in a typical _Sidebar.md file for a GitHub wiki):

[[Usage]]  
[[Advanced Usage]]

And given that the following files exist:

Usage.md
Advanced-Usage.md

I'd expect...

... these links NOT to be flagged by Lychee.

Observed behaviour

Instead, these type of links are reported as broken if they contain spaces, while the links work perfectly fine in reality.

### Errors in wiki/_Sidebar.md

Error: R] <file:///path/to/wiki/Advanced%20Usage> | Cannot find file

Additional information

I believe this issue was introduced via #1650 / PR #1679