### Summary

when running ansible-test over a collection, if there are errors or failures, it will link you to the correct documentation to help resolve the issue. this functionality is currently broken as it is linking to `docs.ansible.com/ansible/` instead of `docs.ansible.com/ansible-core/` which leads to 404s. 


### Issue Type

Bug Report

### Component Name

ansible-test

### Ansible Version

```console
$ ansible --version
ansible [core 2.11.2]
```


### Configuration

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


### OS / Environment

Fedora 34

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)
ansible-test sanity --docker
```


### Expected Results

Expect for docs link to correct navigate to the correct documentation. 

### Actual Results

```console
leads to documentation that 404s. Ex: https://docs.ansible.com/ansible/2.12/dev_guide/testing/sanity/pylint.html
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""Load the specified YAML file and return the contents."""
        yaml_to_json_path = os.path.join(SANITY_ROOT, self.name, 'yaml_to_json.py')
        return json.loads(raw_command([python.path, yaml_to_json_path], data=read_text_file(path), capture=True)[0])
    def test(self, args, targets, python):  
        if args.explain:
            return SanitySuccess(self.name)
        if not os.path.isfile(self.CI_YML):
            return SanityFailure(self.name, messages=[SanityMessage(
                message='file missing',
                path=self.CI_YML,
            )])
        results = dict(
            comments=[],
            labels={},
        )
        self.load_ci_config(python)
        self.check_changes(args, results)
        write_json_test_results(ResultType.BOT, 'data-sanity-ci.json', results)
        messages = []
        messages += self.check_posix_targets(args)
        messages += self.check_windows_targets()
        if messages:
            return SanityFailure(self.name, messages=messages)
        return SanitySuccess(self.name)
    def check_posix_targets(self, args):