Markdown Links: some URLencoded delimiters do not work (for example '&' %26)

[text](AI%20&%20ML.md) points to file AL & ML (correct)
[text](AI%20%26%20ML.md) points to file AL %26 ML (incorrect)

Related to Links including a colon in the domain/path component do not work, perhaps!

The URL scheme also doesn’t use the right encoding IIRC.