ZA.yaml in countries-5.7.0

- old
+ new

@@ -10,9 +10,10 @@
   alpha2: ZA
   alpha3: ZAF
   continent: Africa
   country_code: '27'
   currency_code: ZAR
+  distance_unit: KM
   g20_member: true
   gec: SF
   geo:
     latitude: -30.559482
     longitude: 22.937506