a typo in comment of Snapshotter.Update
a typo in comment of Snapshotter.Update

containerd/snapshot/snapshotter.go

Signed-off-by: yanxuean <fea65f46f148dc221c24d094de388690c66eb375@zte.com.cn>

mikebrow/containerd,vdemeester/containerd,containerd/containerd,miaoyq/containerd,containerd/containerd,miaoyq/containerd,kunalkushwaha/containerd,estesp/containerd,thaJeztah/containerd,estesp/containerd,AkihiroSuda/containerd,crosbymichael/containerd,thaJeztah/containerd,mikebrow/containerd,kunalkushwaha/containerd,dmcgowan/containerd,crosbymichael/containerd,vdemeester/containerd,dmcgowan/containerd