docs(rsc): update React Router RSC references to official documentation

Update documentation to reflect React Router's official RSC support:
- Replace experimental RSC preview links with official documentation
- Update example description to mention official RSC support
- Add links to announcement blog post and official docs

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: hi-ogawa

packages/plugin-rsc/README.md

@@ -22,7 +22,7 @@ npx degit vitejs/vite-plugin-react/packages/plugin-rsc/examples/starter my-app
 - [`./examples/starter`](./examples/starter)
   - This example provides an in-depth overview of API with inline comments to explain how they function within RSC-powered React application.
 - [`./examples/react-router`](./examples/react-router)
-  - This demonstrates how to integrate [experimental React Router RSC API](https://remix.run/blog/rsc-preview) with this plugin.
+  - This demonstrates how to integrate [React Router RSC](https://reactrouter.com/how-to/react-server-components) with this plugin.
     It also includes `@cloudflare/vite-plugin` integration.
 - [`./examples/basic`](./examples/basic)
   - This is mainly used for e2e testing and include various advanced RSC usages (e.g. `"use cache"` example).
@@ -443,5 +443,5 @@ Additionally, Parcel and React Router's work on standardizing the RSC bundler/ap
 - [Waku](https://github.com/wakujs/waku)
 - [@lazarv/react-server](https://github.com/lazarv/react-server)
 - [@jacob-ebey/vite-react-server-dom](https://github.com/jacob-ebey/vite-plugins/tree/main/packages/vite-react-server-dom)
-- [React Router RSC](https://remix.run/blog/rsc-preview)
+- [React Router RSC](https://reactrouter.com/how-to/react-server-components)
 - [Parcel RSC](https://parceljs.org/recipes/rsc)

packages/plugin-rsc/examples/react-router/README.md

@@ -2,13 +2,13 @@
 
 https://vite-rsc-react-router.hiro18181.workers.dev
 
-Vite RSC example based on demo made by React router team with Parcel:
+This example demonstrates how to integrate [React Router RSC](https://reactrouter.com/how-to/react-server-components) with `@vitejs/plugin-rsc`. React Router now provides official React Server Components support, allowing you to build full-stack applications with server-side rendering and client-side routing.
 
-- https://github.com/jacob-ebey/parcel-plugin-react-router/
-- https://github.com/jacob-ebey/experimental-parcel-react-router-starter
-- https://github.com/remix-run/react-router/tree/rsc/playground/rsc-vite
+See also:
 
-See also [`rsc-movies`](https://github.com/hi-ogawa/rsc-movies/).
+- [React Router RSC documentation](https://reactrouter.com/how-to/react-server-components)
+- [React Router RSC announcement](https://remix.run/blog/react-router-and-react-server-components)
+- [`rsc-movies`](https://github.com/hi-ogawa/rsc-movies/)
 
 [![Open in StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/vitejs/vite-plugin-react/tree/main/packages/plugin-rsc/examples/react-router?file=src%2Froutes%2Froot.tsx)