add comment to clarify change in checking logic

pkg/minikube/cruntime/containerd.go

@@ -250,6 +250,7 @@ func (r *Containerd) Disable() error {
 func (r *Containerd) ImageExists(name string, sha string) bool {
 	klog.Infof("Checking existence of image with name %q and sha %q", name, sha)
 	c := exec.Command("sudo", "ctr", "-n=k8s.io", "images", "check")
+	// note: image name and image id's sha can be on different lines in ctr output
 	if rr, err := r.Runner.RunCmd(c); err != nil ||
 		!strings.Contains(rr.Output(), name) ||
 		(sha != "" && !strings.Contains(rr.Output(), sha)) {