trivial update to vm-state options (#478)
trivial update to vm-state options (#478)

This is a trivial doc change, the far-easier half of #477 's goals (the other one being an error message for incorrect usage, maybe).  This one just corrects the documentation to avoid the silently-failing case.  So easy.
adamleff/knife-vsphere,ezrapagel/knife-vsphere,swalberg/knife-vsphere,chef-partners/knife-vsphere,swalberg/knife-vsphere