### Summary

The help from ``ansible-galaxy collection verify`` reads:
```
positional arguments:
  collection_name       The collection(s) name or path/url to a tar.gz collection artifact. This is mutually exclusive with --requirements-file.
```

However, only ``namespace.collection`` appears supported.

### Issue Type

Bug Report

### Component Name

ansible-galaxy

### Ansible Version

```console
ansible [core 2.11.6] 
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/dmsimard/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/dmsimard/dev/virtualenvs/ansible/lib64/python3.9/site-packages/ansible
  ansible collection location = /home/dmsimard/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/dmsimard/dev/virtualenvs/ansible/bin/ansible
  python version = 3.9.7 (default, Aug 30 2021, 00:00:00) [GCC 11.2.1 20210728 (Red Hat 11.2.1-1)]
  jinja version = 3.0.2
  libyaml = True
```


### Configuration

```console
not relevant
```


### OS / Environment

not relevant

### Steps to Reproduce

From ``ansible-galaxy collection verify --help``:
```
> ansible-galaxy collection verify --help
usage: ansible-galaxy collection verify [-h] [-s API_SERVER] [--token API_KEY] [-c] [-v] [-p COLLECTIONS_PATH] [-i] [--offline] [-r REQUIREMENTS] [collection_name ...]

positional arguments:
  collection_name       The collection(s) name or path/url to a tar.gz collection artifact. This is mutually exclusive with --requirements-file.
```
^ **The collection(s) name or path/url to a tar.gz collection artifact.**


However:
```
> wget https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz
2021-10-19 12:37:28 (8.82 MB/s) - ‘community-general-3.8.0.tar.gz’ saved [2220728/2220728]

> ansible-galaxy collection verify community-general-3.8.0.tar.gz
ERROR! 'file' type is not supported. The format namespace.name is expected.

> ansible-galaxy collection verify https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz
Downloading https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz to /home/dmsimard/.ansible/tmp/ansible-local-821546820f8vxq/tmplac4iqqg/community-general-3.8.0-jg8r9knz
ERROR! 'url' type is not supported. The format namespace.name is expected.
```

### Expected Results

Either it should work or the help text should be updated.

### Actual Results

```console
> wget https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz
2021-10-19 12:37:28 (8.82 MB/s) - ‘community-general-3.8.0.tar.gz’ saved [2220728/2220728]

> ansible-galaxy collection verify community-general-3.8.0.tar.gz
ERROR! 'file' type is not supported. The format namespace.name is expected.

> ansible-galaxy collection verify https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz
Downloading https://galaxy.ansible.com/download/community-general-3.8.0.tar.gz to /home/dmsimard/.ansible/tmp/ansible-local-821546820f8vxq/tmplac4iqqg/community-general-3.8.0-jg8r9knz
ERROR! 'url' type is not supported. The format namespace.name is expected.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""
        Exits with the specified return code unless the
        option --ignore-errors was specified
        """
        if not context.CLIARGS['ignore_errors']:
            raise AnsibleError('- you can use --ignore-errors to skip failed roles and finish processing the list.')
    @staticmethod
    def _display_role_info(role_info):
        text = [u"", u"Role: %s" % to_text(role_info['name'])]
        
        galaxy_info = role_info.get('galaxy_info', {})
        description = role_info.get('description', galaxy_info.get('description', ''))
        text.append(u"\tdescription: %s" % description)
        for k in sorted(role_info.keys()):
            if k in GalaxyCLI.SKIP_INFO_KEYS:
                continue
            if isinstance(role_info[k], dict):
                text.append(u"\t%s:" % (k))
                for key in sorted(role_info[k].keys()):
                    if key in GalaxyCLI.SKIP_INFO_KEYS:
                        continue
                    text.append(u"\t\t%s: %s" % (key, role_info[k][key]))
            else:
                text.append(u"\t%s: %s" % (k, role_info[k]))
        
        text.append(u"")
        return u'\n'.join(text)
    @staticmethod
    def _resolve_path(path):