### Summary

The `get_url` module documentation has extraneous formatting in the "not" word in:
```
NTLM authentication is C(not) supported even if the GSSAPI mech for NTLM has been installed.
```
As it is a part of a sentence, I suspect the "not" here should not have any specific formatting.

### Issue Type

Documentation Report

### Component Name

get_url

### Ansible Version

```console
$ ansible --version
irrelevant
```


### Configuration

```console
$ ansible-config dump --only-changed
irrelevant
```


### OS / Environment

irrelevant

### Additional Information

irrelevant

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""
    Returns True if checksum value has supported URL scheme, else False."""
    supported_schemes = ('http', 'https', 'ftp', 'file')
    return urlsplit(checksum).scheme in supported_schemes
def main():
    argument_spec = url_argument_spec()
    
    argument_spec['url_username']['aliases'] = ['username']
    argument_spec['url_password']['aliases'] = ['password']
    argument_spec.update(
        url=dict(type='str', required=True),
        dest=dict(type='path', required=True),
        backup=dict(type='bool', default=False),
        sha256sum=dict(type='str', default=''),
        checksum=dict(type='str', default=''),
        timeout=dict(type='int', default=10),
        headers=dict(type='dict'),
        tmp_dest=dict(type='path'),
        unredirected_headers=dict(type='list', elements='str', default=[]),
    )
    module = AnsibleModule(
        
        argument_spec=argument_spec,
        add_file_common_args=True,
        supports_check_mode=True,
        mutually_exclusive=[['checksum', 'sha256sum']],