Update snapshots docs with garbage collector label
Update snapshots docs with garbage collector label

Signed-off-by: Oliver Stenbom <c539153ba1f947bd4b6f910263b967c4a0a62357@stenbom.eu>

estesp/containerd,vdemeester/containerd,thaJeztah/containerd,containerd/containerd,containerd/containerd,crosbymichael/containerd,dmcgowan/containerd,thaJeztah/containerd,mikebrow/containerd,estesp/containerd,crosbymichael/containerd,mikebrow/containerd,vdemeester/containerd,dmcgowan/containerd