If you plan on recreating the nginx service & deployment you need to remove both or kubernetes will refuse to rebuild them. Otherwise you get this error:
root@compute3:~# kubectl run nginx --image=nginx --port=80
Error from server: deployments.extensions "nginx" already exists
Additionally this commit fixes the numbering in the deleted section. The numbered list restarts at 1 due to the indented code, so a simple work around is to escape the period in the numbered list.