docs(Browser-router.md): Update for React 18.0 (#9953)

Co-authored-by: Tim Dorr <[email protected]>

Author: LordThi

contributors.yml

@@ -169,3 +169,4 @@
 - xavier-lc
 - xcsnowcity
 - yuleicul
+- LordThi

docs/router-components/browser-router.md

@@ -27,14 +27,15 @@ A `<BrowserRouter>` stores the current location in the browser's address bar usi
 
 ```tsx
 import * as React from "react";
-import * as ReactDOM from "react-dom";
+import { createRoot } from 'react-dom/client';
 import { BrowserRouter } from "react-router-dom";
 
-ReactDOM.render(
+const root = createRoot(document.getElementById('root'));
+
+root.render(
   <BrowserRouter>
     {/* The rest of your app goes here */}
-  </BrowserRouter>,
-  root
+  </BrowserRouter>
 );
 ```