add a video from youtube

add a video to docs

<iframe width="675" height="450" src="https://www.youtube.com/embed/_AQXQDjw7Y8" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

disable how many views the video has

http://www.tothepc.com/archives/hide-youtube-video-statistics-data/

disable comments

https://support.google.com/youtube/answer/9482556?hl=en