Update countries.js

I am trying to import this file in my .js file in vs code using this code-
import {countries} from 'https://github.com/Asabeneh/30DaysOfJavaScript/tree/master/data/countries.js'

data/countries.js

@@ -193,3 +193,5 @@ const countries = [
   'Zambia',
   'Zimbabwe'
 ]
+//exporting array
+export{countries};