action/import: Fix "linked_clone" option name
action/import: Fix "linked_clone" option name

Its name is "use_linked_clone"

legal90/vagrant-parallels,Kast0rTr0y/vagrant-parallels,Kast0rTr0y/vagrant-parallels,kidaa/vagrant-parallels,KillerDesigner/vagrant-parallels,Kast0rTr0y/vagrant-parallels,Parallels/vagrant-parallels,legal90/vagrant-parallels,kidaa/vagrant-parallels,Parallels/vagrant-parallels,KillerDesigner/vagrant-parallels,Parallels/vagrant-parallels,kidaa/vagrant-parallels,KillerDesigner/vagrant-parallels,legal90/vagrant-parallels