Fix router link (#4105)

src/data/roadmaps/react/content/105-routers/100-react-router.md

@@ -5,7 +5,7 @@ React router is the most famous library when it comes to implementing routing in
 Visit the following resources to learn more:
 
 - [React Router — Official Website](https://reactrouter.com/)
-- [Getting Started Guide](https://reactrouter.com/docs/en/v6/getting-started/tutorial)
+- [Getting Started Guide](https://reactrouter.com/en/main/start/tutorial)
 - [React Router v6 in 1 hour](https://youtu.be/0cSVuySEB0A)
 - [How to use React Router v6](https://www.robinwieruch.de/react-router/)
 - [React Router Cheat Sheet](https://stackdiary.com/guides/react-router-cheat-sheet-reference/)