### 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
if not v:
            raise ValueError('Empty string is not a valid version')
        if collection_name == 'ansible.builtin':
            return StrictVersion(v)
        if collection_name is not None:
            return SemanticVersion(v)
        return self._StrictVersion(v)
    def __enter__(self):
        return self
    def __exit__(self, exc_type, exc_value, traceback):
        if not self.base_module:
            return
        try:
            os.remove(self.base_module)
        except Exception:
            pass
    @property
    def object_name(self):
        return self.basename
    @property
    def object_path(self):
        return self.path
    def _get_collection_meta(self):