Zambia currency updated

frappe/geo/country_info.json

@@ -2623,7 +2623,7 @@
  },
  "Zambia": {
   "code": "zm",
-  "currency": "ZMK",
+  "currency": "ZMW",
   "currency_fraction": "Ngwee",
   "currency_fraction_units": 100,
   "currency_name": "Zambian Kwacha",