fix typos and update link

docs/advanced-features/react-18/basic.md

@@ -2,7 +2,7 @@
 
 [React 18](https://reactjs.org/blog/2021/06/08/the-plan-for-react-18.html) adds new features including, Suspense, automatic batching of updates, APIs like `startTransition`, and a new streaming API for server rendering with support for `React.lazy`.
 
-React 18 is in RC now. Read more about React 18's [release plan](https://github.com/reactwg/react-18/discussions) and discussions from the [working group](https://github.com/reactwg/react-18/discussions).
+React 18 is in RC now. Read more about React 18's [release plan](https://github.com/reactwg/react-18/discussions) and discussions from the [working group](https://reactjs.org/blog/2021/06/08/the-plan-for-react-18.html).
 
 ## React 18 Usage in Next.js
 
@@ -20,6 +20,6 @@ This is an experimental feature in Next.js 12, but once enabled, SSR will use th
 
 ## React Server Components (Alpha)
 
-React Server Components is a new feature in React experimental release yet, which let you reduce your code bundle size by separating server and client side code as different kinds of components and streaming the server rendered result to client.
+React Server Components is a new feature in React experimental release, which lets you reduce your code bundle size by separating server and client side code as different kinds of components and streaming the server rendered result to client.
 
 It is still in research and development in React and Next.js provides it as an experimental feature in v12. Checkout [React 18 - Server Components](/docs/react-18/server-components.md) section for details.