See also links (\sa) are not deduplicated

https://doc.qt.io/qt-6/qtqml-documents-structure.html end with a see also section:

See also Type annotations and assertions and Type annotations and assertions. 

Because "\sa {Type annotations and assertions}" is present twice in the document, the link is added twice in the list of links as well.

Ideally this list of targets should get deduplicated.