Fix Windows install powershell script
Fix Windows install powershell script

Signed-off-by: Shaun Lawrie <dedda7eb1a2a2573f38cdf7ab7350506ded41030@gmail.com>
estesp/containerd,thaJeztah/containerd,containerd/containerd,estesp/containerd,containerd/containerd,thaJeztah/containerd,mikebrow/containerd,mikebrow/containerd