docs(array): combine example blocks into one for consistency

Author: monners

book/content/part02/array.asc

@@ -41,18 +41,12 @@ const array = [2, 5, 1, 9, 6, 7];
 const array2 = [];
 array2[3] = 1;
 array2[100] = 2;
-array2 // [empty × 3, 1, empty × 96, 2]
-----
-
-Using the index, you can replace whatever value you want. Also, you don't have to add items next to each other. The size of the array will dynamically expand to accommodate the data. You can reference values in whatever index you like index 3 or even 100! In the `array2` we inserted 2 numbers, but the length is 101, and there are 99 empty spaces.
 
-[source, javascript]
-----
 console.log(array2.length); // 101
 console.log(array2); // [empty × 3, 1, empty × 96, 2]
 ----
 
-
+Using the index, you can replace whatever value you want. Also, you don't have to add items next to each other. The size of the array will dynamically expand to accommodate the data. You can reference values in whatever index you like index 3 or even 100! In the `array2` we inserted 2 numbers, but the length is 101, and there are 99 empty spaces.
 The runtime for inserting elements using index is always is constant: _O(1)_.
 
 ===== Inserting at the beginning of the array