fix broken speech ballon emoji (#18967)

* fix broken speech ballon emoji

* Fix speech ballon emoji

* Add image warning sign

* Update image warning sign link

client/src/guide/english/certifications/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/steamroller/index.md

@@ -19,19 +19,19 @@ You need to check if an element is an array or not.
 
 ## ![:speech_balloon:](https://forum.freecodecamp.com/images/emoji/emoji_one/speech_balloon.png?v=3 ":speech_balloon:") Hint: 2
 
-If you are dealing with an array, then you need flatten it by getting the value inside of the array. This means if you have <a href='https://forum.freecodecamp.com/images/emoji/emoji_one/speech_balloon.png?v=3 ":speech_balloon:"' target='_blank' rel='nofollow'>[4]] then instead of returning [4] you need to return 4\. If you get [[[4]]] then the same, you want the 4\. You can access it with arr[index1][index2] to go a level deeper.
+If you are dealing with an array, then you need flatten it by getting the value inside of the array. This means if you have ```[[4]]``` then instead of returning ```[4]``` you need to return ```4```. If you get ```[[[4]]]``` then the same, you want the ```4```. You can access it with ```arr[index1][index2]``` to go a level deeper.
 
 > _try to solve the problem now_
 
-## ![:speech_balloon:</a> Hint: 3
+## ![:speech_balloon:](https://forum.freecodecamp.com/images/emoji/emoji_one/speech_balloon.png?v=3 ":speech_balloon:") Hint: 3
 
 You will definitely need recursion or another way to go beyond two level arrays to make the code flexible and not hard-coded to the answers needed. Have fun!
 
 > _try to solve the problem now_
 
 ## Spoiler Alert!
-
-![warning sign](//discourse-user-assets.s3.amazonaws.com/original/2X/2/2d6c412a50797771301e7ceabd554cef4edcd74d.gif)
+ 
+![warning sign](./warning%20sign.gif?raw=true)
 
 **Solution ahead!**