UniversalCamera in docs uses FreeCamera

The playground example uses a FreeCamera not a UniversalCamera
https://playground.babylonjs.com/#DWPQ9R#1

Thanks for that. FreeCamera was replaced by the UniversalCamera (you can read about it here - UniversalCamera | Babylon.js Documentation)

They are constructed using the same parameters, but you are right, it will be better to show a universal camera there (just like in the code).
Want to submit a PR?