docs: Tweak textTracks example

Author: eportis-cloudinary

docs/pages/cldvideoplayer/configuration.mdx

@@ -523,18 +523,18 @@ be loaded from as well as any customization of that track.
 
 **Examples**
 
-```jsx
+```jsx copy
 <CldVideoPlayer
-textTracks={{
-  captions: {
-      label: 'English',
-      language: 'en',
-      default: true,
-      url: 'https://res.cloudinary.com/<Cloud Name>/raw/upload/<FileName>.vtt'
+  textTracks={{
+    captions: {
+        label: 'English',
+        language: 'en',
+        default: true,
+        url: 'https://res.cloudinary.com/<Cloud Name>/raw/upload/<File Name>.vtt'
     }
   }
 }
-/>
+... />
 ```
 
 Learn more on the [Video Player Reference](https://cloudinary.com/documentation/video_player_api_reference#text_tracks) or