Update index.md (#4988)

format the command line
kubernetes · Aug 17, 2017 · 82d421f · 82d421f
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commit 82d421f
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diff --git a/docs/admin/high-availability/index.md b/docs/admin/high-availability/index.md
@@ -99,6 +99,7 @@ for `${NODE_IP}` on each machine.
 #### Validating your cluster
 
 Once you copy this into all three nodes, you should have a clustered etcd set up.  You can validate on master with
+
 ```shell
 kubectl exec < pod_name > etcdctl member list
 ```