In Hovercards, apostrophes are shown as ' and quotation marks as "
Test with [["Heroes"]] at https://en.wikipedia.org/wiki/Wikipedia:Article_titles#Article_title_format
or with [[Hubble's law]] at https://en.wikipedia.org/wiki/List_of_laws#Astronomy_and_cosmology_laws
However! It's not consistent...
The cards linked from everything here, work properly: https://en.wikipedia.org/wiki/Don%27t
I haven't deduced a pattern...? (but also sleepy)