virsh: Fix man page argument ordering for vol-clone command
virsh: Fix man page argument ordering for vol-clone command

The proper command order is 'virsh vol-clone source-vol target-vol pool'.
While making the modification clean up the description a bit too in
order to help clarify under what circumstances the source-vol could be
found if the pool name was not provided.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

fabianfreyer/libvirt,eskultety/libvirt,libvirt/libvirt,nertpinx/libvirt,crobinso/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,jardasgit/libvirt,andreabolognani/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,eskultety/libvirt,jardasgit/libvirt,olafhering/libvirt,crobinso/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zippy2/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,libvirt/libvirt,zippy2/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zippy2/libvirt,andreabolognani/libvirt,jardasgit/libvirt,nertpinx/libvirt,libvirt/libvirt,jardasgit/libvirt,eskultety/libvirt,olafhering/libvirt,nertpinx/libvirt,olafhering/libvirt,zippy2/libvirt,jfehlig/libvirt,eskultety/libvirt,libvirt/libvirt,eskultety/libvirt,jfehlig/libvirt,nertpinx/libvirt,olafhering/libvirt,jardasgit/libvirt,jfehlig/libvirt