fix test for additives in Polish, because missing skrobia modyfikowana
fix test for additives in Polish, because missing skrobia modyfikowana

openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server