uninstalling guide is not complete

[erikdemarco]

when you follow this to uninstall easypanel its not cleanly uninstall easypanel. for some reason it always creating a new instance of the app because of you forgot to mention to remove all docker swarm service and disable the swarm

[deiucanta]

The guide mentions the fact that you need to remove the docker swarm services.

We should add a step for disabling the swarm.