Fixed typo: corrected 'role' to proper Polish declension 'rola'

frontend/src/locale/src/pl.json

@@ -204,7 +204,7 @@
 		"defaultMessage": "Dostawca"
 	},
 	"column.roles": {
-		"defaultMessage": "Role"
+		"defaultMessage": "Rola"
 	},
 	"column.rules": {
 		"defaultMessage": "Reguły"