install docs: use "install" and "choco -y" (#3992)
install docs: use "install" and "choco -y" (#3992)

Use install(1) because it's purpose is more straight-forward. 

Use `-y` for choco to avoid hanging prompt.

Fixes #2948
GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold