my text is red underligned each time I add text in text box everywhere in Zoho CRM

my text is red underligned each time I add text in text box everywhere in Zoho CRM

Hello

My language is French, and  I use ZOHO Crm in french.
When I add comment (anywhere in ZOHO crm : contact, account or potential), when I type my text, all the words are red underlined, as if the words were not recognized in the french dictionary. If I type english words, there is not red.
Can you help me to fix that  ?

Didier