style(react-demo): clean up code formatting and video source organization

- Improve code formatting with consistent indentation
- Organize video source options with clearer commenting
- Remove trailing whitespace

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

Co-Authored-By: Claude <noreply@anthropic.com>

examples/react-demo/src/main.tsx

@@ -7,13 +7,17 @@ const DemoPlayer = () => {
     <MediaProvider>
       <MediaSkinDefault>
         {/* @ts-ignore */}
-        {/* <Video muted src="https://www.w3schools.com/html/mov_bbb.mp4" /> */}
-        <Video muted src="https://stream.mux.com/a4nOgmxGWg6gULfcBbAa00gXyfcwPnAFldF8RdsNyk8M.m3u8" />
+        {/* <Video
+          muted
+          src="https://stream.mux.com/A3VXy02VoUinw01pwyomEO3bHnG4P32xzV7u1j1FSzjNg/high.mp4"
+        /> */}
+        <Video
+          muted
+          src="https://stream.mux.com/a4nOgmxGWg6gULfcBbAa00gXyfcwPnAFldF8RdsNyk8M.m3u8"
+        />
       </MediaSkinDefault>
     </MediaProvider>
   );
 };
 
-ReactDOM.createRoot(document.getElementById('root')!).render(
-  <DemoPlayer />
-);
+ReactDOM.createRoot(document.getElementById('root')!).render(<DemoPlayer />);