Add FR translation for new FAQ

New fields to be translated since https://github.com/rubymonsters/diversity_ticketing/pull/479 got merged.

You can find the English version here https://github.com/rubymonsters/diversity_ticketing/blob/master/config/locales/en.yml#L465-L467

French translations should go here https://github.com/rubymonsters/diversity_ticketing/blob/master/config/locales/fr.yml#L465-L467