### 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
self._validate_required_by(last_context_spec.get('required_by'), spec, context)
        provider_args = set()
        args_from_argspec = set()
        deprecated_args_from_argspec = set()
        doc_options = docs.get('options', {})
        if doc_options is None:
            doc_options = {}
        for arg, data in spec.items():
            restricted_argument_names = ('message', 'syslog_facility')
            if arg.lower() in restricted_argument_names:
                msg = "Argument '%s' in argument_spec " % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += "must not be one of %s as it is used " \
                       "internally by Ansible Core Engine" % (",".join(restricted_argument_names))
                self.reporter.error(
                    path=self.object_path,
                    code='invalid-argument-name',
                    msg=msg,
                )
                continue
            if 'aliases' in data:
                for al in data['aliases']:
                    if al.lower() in restricted_argument_names:
                        msg = "Argument alias '%s' in argument_spec " % al
                        if context:
                            msg += " found in %s" % " -> ".join(context)
                        msg += "must not be one of %s as it is used " \
                               "internally by Ansible Core Engine" % (",".join(restricted_argument_names))
                        self.reporter.error(