Italian spell checker issue with typographic apostrophes

[Gnappo]

When I use the spell checker (Check Spelling / Alt+F7) in Calibre Portable 9.14 while editing Italian ebooks, it flags as possible spelling errors all words containing a typographic apostrophe (’).

For example:

c’è
l’acqua
un’altra

If I replace the typographic apostrophe with the typewriter/ASCII apostrophe ('), the spell checker recognizes the words correctly and no longer flags them.

Is there a way to configure Calibre's spell checker or Italian dictionary so that words containing the typographic apostrophe (’) are recognized correctly?

I would prefer to keep the typographic apostrophe in my ebooks and avoid having to use Find & Replace every time.

I'm using Calibre Portable 9.14 on Windows.

Any suggestions would be greatly appreciated.