Special case list of scalar complex param

Don't document the JSON version.

Before:

```
       --instance-ids (list)
          The list of instances to terminate.

       JSON Syntax:

          ["string", ...]
```

After:

```
       --instance-ids (list) The list of instances to terminate.

       Syntax:

       "string" "string" ...
```

Test is being sent via CLI PR.