text in doubles

Hello,
on blog articles, the text appears to leave a comment in duplicate.
See: http://collectihihihif.com/amis-corse-nous-voila/
In French it gives:
Publier une Réponse
Publier un commentaire
translation:
Post a Reply
Post a comment

How to leave only the text “Post a comment”?

Thanks for your help

Best Regards
Nicolas Picand