fix(curriculum): Consolidated comments for JavaScript Algorithms and Data Structures challenges - part 2 of 4 (#38259)

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/use-higher-order-functions-map-filter-or-reduce-to-solve-a-complex-problem.english.md

@@ -44,12 +44,11 @@ tests:
 
 ```js
 const squareList = (arr) => {
-  // only change code below this line
+  // Only change code below this line
   return arr;
-  // only change code above this line
+  // Only change code above this line
 };
 
-// test your code
 const squaredIntegers = squareList([-3, 4.8, 5, 3, -3.2]);
 console.log(squaredIntegers);
 ```