fix req dependency for documentation
fix req dependency for documentation

privacyidea/privacyidea,jh23453/privacyidea,wheldom01/privacyidea,jh23453/privacyidea,privacyidea/privacyidea,wheldom01/privacyidea,privacyidea/privacyidea,privacyidea/privacyidea,wheldom01/privacyidea,wheldom01/privacyidea,jh23453/privacyidea,wheldom01/privacyidea,jh23453/privacyidea,jh23453/privacyidea,privacyidea/privacyidea,wheldom01/privacyidea,jh23453/privacyidea,privacyidea/privacyidea