Update code block formatting

Close to the release deadline, a suggestion was made to break the large code block apart into separate ones. Creating this story so that suggestion is not lost. If we break the code block, then maybe procedural steps make more sense.

http://file.bos.redhat.com/tokeefe/OSSMDOC-702/service_mesh/v2x/ossm-traffic-manage.html#ossm-automatic-gateway-injection_traffic-management