Fix man and commandline docs

- missing help option in `docs/reference/commandline/*.md` (some files
  have it, the other I fixed didn't)
- missing `[OPTIONS]` in Usage description
- missing options
- formatting
- start/stop idempotence

Signed-off-by: Antonio Murdaca <amurdaca@redhat.com>

docs/reference/commandline/pull.md

@@ -17,6 +17,7 @@ weight=1
 
       -a, --all-tags=false          Download all tagged images in the repository
       --disable-content-trust=true  Skip image verification
+      --help=false                  Print usage
 
 Most of your images will be created on top of a base image from the
 [Docker Hub](https://hub.docker.com) registry.