SEO problem: wrong language sitelinks

[ss2016]

The French and German version of my web site are showing mixed language sitelinks

I have no idea how to fix this now that Google have remove demote sitelinks feature, how can I make sure only the german site links appear in the german version of the site and french site links only appear in the french version of the site?

www.mercimamanboutique.com/de-de/

www.mercimamanboutique.com/fr-fr/

Thanks again