This is a goldmark plugin for processing wikilinks
(links that look like [[Hi there]]). You can add it
directly to your goldmark to have it turn links like
the example into [Hi there](Hi there.html). Using a FilenameNormalizer you can
customize what the link destination is. Using a WikilinkTracker you can gather up
the links to create a list of backlinks, which was the reason I created this in
the first place.