taxonomy: Synonyms for cs (#6979)
taxonomy: Synonyms for cs (#6979)

* Syn cs

The correct spelling in cs seems to be "kyselina citronová", but some products contain the sk version "kyselina citrónová".

* Update additives.txt
openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server