When I run `aws s3 get-object help` I get a:

```
       System Message: ERROR/3 (<stdin>:, line 72)
              Inconsistent literal block quoting.
```

I believe I have some local code to fix this class.  We want to add a non-option param to argparse:

parser.add_argument('output_file', ...)

but right now we're adding `--Body` instead.  I'll go ahead and fix this once this gets checked in, but I'm not sure about 'help' output warning message.