Fix invalid link

src/roadmaps/nodejs/content/102-nodejs-npm/index.md

@@ -6,7 +6,7 @@ It is two things: first and foremost, it is an online repository for the publish
 
 Visit the following resources to learn more:
 
-- [What is npm?](https://nodejs.org/en/knowledge/getting-started/npm/what-is-npm/)
+- [What is npm?](https://nodejs.dev/en/learn/an-introduction-to-the-npm-package-manager/)
 - [An introduction to the npm package manager](https://nodejs.dev/en/learn/an-introduction-to-the-npm-package-manager/)
 - [Official Website](https://www.npmjs.com/)
 - [Official Documentation](https://docs.npmjs.com/)