This is a problem with the design website, so we will forward this to the design backlog. Closing this.
This is a documentation issue. There are many similar documentation issues in this repo and even a documentation label. Are you moving all of them to the design backlog or just this one? If it's just this one... why?
Maybe you can add a query string to the link that can be read by the extension to connect the room?
This way the host user can just send the link to their friends, and the friends can just open the link and activate the extension.