[master] format the end of get started blog (#11840)
[master] format the end of get started blog (#11840)

* format the end of get started blog

* fix lint

Co-authored-by: Lin Sun <d8e7ebb42eb663eb6bb1ccae4bb27276f3efaa53@solo.io>
istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io