There is a typo in the demo repository, in the french sitemap of the www site: in the Fonctionnalités clés > Formulaires page, the title of the second article should be "Comment créer et gérer vos formulaires ?" instead of "Comment créer et gérez vos formulaires?".
Moreover, in most of the articles shown in the "Fonctionnalités clés" page, there is no space before the question mark in the title (this is valid in english but not in french).