Modding Help I'm searching the rarity strings

Hi, i'm translating the game in italian and i'm finding everything using the config files...
Yesterday i serched the rarity label that is situated down-left on the item tab in the inventory and i couldn't find nothing in the config files...
I used notepad++ to search in files various strings like: ("legendary", "legendary" :, "rarities", "rarity"), but nothing, i can't find the string itself to edit...

(Sorry if it's the wrong sub)