fix: change the explanation of splice function (#36721)

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-data-structures/add-items-using-splice.english.md

@@ -7,22 +7,20 @@ forumTopicId: 301152
 
 ## Description
 <section id='description'>
-Remember in the last challenge we mentioned that <code>splice()</code> can take up to three parameters? Well, we can go one step further with <code>splice()</code> &mdash; in addition to removing elements, we can use that third parameter, which represents one or more elements, to <em>add</em> them as well. This can be incredibly useful for quickly switching out an element, or a set of elements, for another. For instance, let's say you're storing a color scheme for a set of DOM elements in an array, and want to dynamically change a color based on some action:
+Remember in the last challenge we mentioned that <code>splice()</code> can take up to three parameters? Well, you can use the third parameter, comprised of one or more element(s), to add to the array. This can be incredibly useful for quickly switching out an element, or a set of elements, for another.
 
 ```js
-function colorChange(arr, index, newColor) {
+const numbers = [10, 11, 12, 12, 15];
-  arr.splice(index, 1, newColor);
+const startIndex = 3;
-  return arr;
+const amountToDelete = 1;
-}
 
-let colorScheme = ['#878787', '#a08794', '#bb7e8c', '#c9b6be', '#d1becf'];
+numbers.splice(startIndex, amountToDelete, 13, 14);
-
+// the second entry of 12 is removed, and we add 13 and 14 at the same index
-colorScheme = colorChange(colorScheme, 2, '#332327');
+console.log(numbers);
-// we have removed '#bb7e8c' and added '#332327' in its place
+// returns [ 10, 11, 12, 13, 14, 15 ]
-// colorScheme now equals ['#878787', '#a08794', '#332327', '#c9b6be', '#d1becf']
 ```
 
-This function takes an array of hex values, an index at which to remove an element, and the new color to replace the removed element with. The return value is an array containing a newly modified color scheme! While this example is a bit oversimplified, we can see the value that utilizing <code>splice()</code> to its maximum potential can have.
+Here we begin with an array of numbers. We then pass the following to <code>splice()</code>. The index at which to begin deleting elements (3), the number of elements to be deleted (1), and the elements (13, 14) to be inserted at that same index. Note that there can be any number of elements (separated by commas) following <code>amountToDelete</code>, each of which gets inserted.
 </section>
 
 ## Instructions