doc: add scoop-extras installation details (#6847)
doc: add scoop-extras installation details (#6847)

Thanks to leg-work by @cheapestorderconcept.
GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold