DOM Manipulation: Remove broken additional resource (#29030)

Not vital enough to replace

foundations/javascript_basics/DOM_manipulation_and_events.md

@@ -464,7 +464,6 @@ This section contains helpful links to related content. It isn't required, so co
 
 - [Eloquent JS - DOM](http://eloquentjavascript.net/13_dom.html)
 - [Eloquent JS - Handling Events](http://eloquentjavascript.net/14_event.html)
-- [DOM Enlightenment](http://domenlightenment.com/)
 - [Plain JavaScript](https://plainjs.com/javascript/) is a reference of JavaScript code snippets and explanations involving the DOM, as well as other aspects of JS. If you've already learned jQuery, it will help you figure out how to do things without it.
 - This [W3Schools](https://www.w3schools.com/js/js_htmldom.asp) article offers easy-to-understand lessons on the DOM.
 - [JS DOM Crash Course](https://www.youtube.com/watch?v=0ik6X4DJKCc&list=PLillGF-RfqbYE6Ik_EuXA2iZFcE082B3s) is an extensive and well explained 4 part video series on the DOM by Traversy Media.