MC.yaml in countries-5.7.0

- old
+ new

@@ -3,9 +3,10 @@
   alpha2: MC
   alpha3: MCO
   continent: Europe
   country_code: '377'
   currency_code: EUR
+  distance_unit: KM
   eu_member: false
   euvat_member: true
   gec: MN
   geo:
     latitude: 43.73841760000001