skaffold.yaml reference should support collapse/expand

Our [skaffold.yaml](https://skaffold.dev/docs/references/yaml/) reference is extremely useful. But some nodes have a sufficiently large number of children that it can be difficult to determine (i) an element's parent, and (ii) whether sub-options may actually be sibling options. For example:

>> Can you please update your skaffold.yaml and add statusCheckDeadlineSeconds to deploy config section to increase the status check deadline?
>
> I may be wrong, but I think this flag is only relevant when using kustomize, which I'm not...

It would be great if we could (1) be able to expand and collapse nodes, and (2) have vertical lines to show parent items (perhaps on hover)?