Add example attributes on documentation

[maxhelias]

I'm not sure if i use the right configuration-bloc, maybe @javiereguiluz can review it, please ?

[scheb]

Stupid question: What is this doing compared to the previous implementation?

[javiereguiluz]

@scheb it creates a clickable set of tabs where readers can select their preferred format (and that format is persisted on the site):

[scheb]

Ok, got it 👍 Sweet!