fix(curriculum/learn): moved the comment one line below. (#38422)

moved the comment ` //add code above this line` in the text editor of [this challenge](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/es6/use--to-import-everything-from-a-file) one line below so that it makes meaning.

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use--to-import-everything-from-a-file.english.md

@@ -59,6 +59,7 @@ stringFunctions.lowercaseString("WORLD!");
 ```js
 import * as stringFunctions from "./string_functions.js";
 
+// add code above this line
 stringFunctions.uppercaseString("hello");
 stringFunctions.lowercaseString("WORLD!");
 ```