qdoc superscript doesn't render correctly in qlitehtml (assistant)

2 \sup something is used a few times in QCborStreamWriter docs, for example:

https://doc.qt.io/qt-6/qcborstreamwriter.html#append

It renders OK in a browser, but not in Assistant.

Hopefully that can be fixed directly. (If not, maybe a possible workaround is to convert superscript numbers to the relevant unicode values? Hopefully it doesn't come to that.)