docs: Update link to next-intl in internationalization docs

I've just moved the domain to [next-intl.dev](https://next-intl.dev), would be cool to update this in the Next.js docs!

docs/01-app/02-building-your-application/01-routing/15-internationalization.mdx

@@ -148,7 +148,7 @@ export default function Root({ children, params }) {
 ## Resources
 
 - [Minimal i18n routing and translations](https://github.com/vercel/next.js/tree/canary/examples/i18n-routing)
-- [`next-intl`](https://next-intl-docs.vercel.app/docs/next-13)
+- [`next-intl`](https://next-intl.dev)
 - [`next-international`](https://github.com/QuiiBz/next-international)
 - [`next-i18n-router`](https://github.com/i18nexus/next-i18n-router)
 - [`paraglide-next`](https://inlang.com/m/osslbuzt/paraglide-next-i18n)