### 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
errors = []
        try:
            schema(doc)
        except Exception as e:
            for error in e.errors:
                error.data = doc
            errors.extend(e.errors)
        for error in errors:
            path = [str(p) for p in error.path]
            local_error_code = getattr(error, 'ansible_error_code', error_code)
            if isinstance(error.data, dict):
                error_message = humanize_error(error.data, error)
            else:
                error_message = error
            if path:
                combined_path = '%s.%s' % (name, '.'.join(path))
            else:
                combined_path = name
            self.reporter.error(
                path=self.object_path,
                code=local_error_code,
                msg='%s: %s' % (combined_path, error_message)
            )
    def _validate_docs(self):