Fix Next JS link (#6467)

src/content/learn/start-a-new-react-project.md

@@ -24,7 +24,7 @@ If you want to build a new app or a new website fully with React, we recommend p
 npx create-next-app@latest
 </TerminalBlock>
 
-If you're new to Next.js, check out the [Next.js tutorial.](https://nextjs.org/learn/foundations/about-nextjs)
+If you're new to Next.js, check out the [Next.js documentation.](https://nextjs.org/docs)
 
 Next.js is maintained by [Vercel](https://vercel.com/). You can [deploy a Next.js app](https://nextjs.org/docs/app/building-your-application/deploying) to any Node.js or serverless hosting, or to your own server. Next.js also supports a [static export](https://nextjs.org/docs/pages/building-your-application/deploying/static-exports) which doesn't require a server.