### 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
spec_suboptions = data.get('options')
            doc_suboptions = doc_options_arg.get('suboptions', {})
            if spec_suboptions:
                if not doc_suboptions:
                    msg = "Argument '%s' in argument_spec" % arg
                    if context:
                        msg += " found in %s" % " -> ".join(context)
                    msg += " has sub-options but documentation does not define it"
                    self.reporter.error(
                        path=self.object_path,
                        code='missing-suboption-docs',
                        msg=msg
                    )
                self._validate_argument_spec({'options': doc_suboptions}, spec_suboptions, kwargs,
                                             context=context + [arg], last_context_spec=data)
        for arg in args_from_argspec:
            if not str(arg).isidentifier():
                msg = "Argument '%s' in argument_spec" % arg
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " is not a valid python identifier"
                self.reporter.error(
                    path=self.object_path,
                    code='parameter-invalid',
                    msg=msg
                )
        if docs:
            args_from_docs = set()
            for arg, data in doc_options.items():
                args_from_docs.add(arg)