Docs missing collapsible sandbox example

[TamjidTayeb]

https://danielcaldas.github.io/react-d3-graph/docs/index.html#collapsible

On the collapsible section on the docs it states:

"To see an example of this behavior you can access this sandbox link that has a specific set up to experiment this feature"

But this sandbox link is no where to be found. Could this be added please so we can see the use of the collapsible feature?

[terahn]

https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=marvel

The Marvel dataset example contains the ability to collapse the 3 category nodes (Teams, Heroes, Villains):

[danielcaldas]

Thank you both @terahn and @TamjidTayeb in fact the example I intended to link in the docs is the Marvel diagram. I'll update the documentation soon with the link.