Update architecture.md
Update architecture.md

Signed-off-by: Andrew Osheroff <7c329ef6cfe6afcb06f2c9c01f97c50f777ff2e3@gmail.com>
Signed-off-by: Phil Estes <dbac1f450dc8326caa7ba104b384a0eca642250c@linux.vnet.ibm.com>

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