ctr: fix Sprintf
ctr: fix Sprintf

Signed-off-by: Akihiro Suda <ea940da7e429af3d0d0c18296cabd0112a36bad5@lab.ntt.co.jp>

docker/containerd,mikebrow/containerd,Wolphin-project/containerd,crosbymichael/containerd,mikebrow/containerd,kunalkushwaha/containerd,hqhq/containerd,rajasec/containerd,containerd/containerd,estesp/containerd,crosbymichael/containerd,vdemeester/containerd,containerd/containerd,vdemeester/containerd,thaJeztah/containerd,lichao-mobanche/containerd,estesp/containerd,miaoyq/containerd,thaJeztah/containerd,dmcgowan/containerd,yuexiao-wang/containerd,miaoyq/containerd,chanezon/containerd,xiekeyang/containerd,kunalkushwaha/containerd,dmcgowan/containerd,AkihiroSuda/containerd