Update use-the-spread-operator-to-evaluate-arrays-in-place.english.md

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-the-spread-operator-to-evaluate-arrays-in-place.english.md

@@ -63,6 +63,12 @@ console.log(arr2);
 <section id='solution'>
 
 ```js
-// solution required
+const arr1 = ['JAN', 'FEB', 'MAR', 'APR', 'MAY'];
+let arr2;
+(function() {
+  "use strict";
+  arr2 = [...arr1]; // change this line
+})();
+console.log(arr2);
 ```
 </section>