Fix misc typos in Italian translation

[danilo-delbusso]

Here's the list of fixes

• inferioreinvece should be two words: inferiore invece
• semprevisualizzare should be two words: sempre visualizzare
• un'emoji should be un emoji since the noun is used in its masculine form throughout. See article from Accademia della Crusca (in Italian)
• chevrons are parentesi uncinate in this context. See relevant section on Wikipedia (in Italian)
• Women is plural. Hence Donne
• Men is plural. Hence Uomini