docs/getting-started.md: typo
docs/getting-started.md: typo

Signed-off-by: Akihiro Suda <10ddef0dea2a66ab193b07198faa879adcb213d8@hco.ntt.co.jp>

thaJeztah/containerd,mikebrow/containerd,thaJeztah/containerd,estesp/containerd,containerd/containerd,containerd/containerd,estesp/containerd,mikebrow/containerd