Fix invalid link

src/roadmaps/nodejs/content/104-nodejs-async-programming/101-event-emitter.md

@@ -4,5 +4,5 @@ In Node.js, an event can be described simply as a string with a corresponding ca
 
 Visit the following resources to learn more:
 
-- [What are Event Emitters?](https://nodejs.org/en/knowledge/getting-started/control-flow/what-are-event-emitters/)
+- [What are Event Emitters?](https://nodejs.dev/en/learn/the-nodejs-event-emitter/)
 - [Using Event Emitters in Node.js](https://www.digitalocean.com/community/tutorials/using-event-emitters-in-node-js)