typo on prerender.md (#7467)

Co-authored-by: Ricky <rickhanlonii@gmail.com>

Author: andihaki

src/content/reference/react-dom/static/prerender.md

@@ -66,7 +66,7 @@ On the client, call [`hydrateRoot`](/reference/react-dom/client/hydrateRoot) to
 #### Returns {/*returns*/}
 
 `prerender` returns a Promise:
-- If rendering the is successful, the Promise will resolve to an object containing:
+- If the rendering is successful, the Promise will resolve to an object containing:
   - `prelude`: a [Web Stream](https://developer.mozilla.org/en-US/docs/Web/API/Streams_API) of HTML. You can use this stream to send a response in chunks, or you can read the entire stream into a string.
   - `postponed`: a JSON-serializeable, opaque object that can be passed to [`resume`](/reference/react-dom/server/resume) if `prerender` did not finish. Otherwise `null` indicating that the `prelude` contains all the content and no resume is necessary.
 - If rendering fails, the Promise will be rejected. [Use this to output a fallback shell.](/reference/react-dom/server/renderToReadableStream#recovering-from-errors-inside-the-shell)