### 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
try:
                                group = int(parts[-1])
                            except ValueError:
                                continue
                            if group < 1 or group > 99:
                                continue
                            group_set = test_groups.setdefault(key, set())
                            group_set.add(group)
            self._ci_test_groups = dict((key, sorted(value)) for key, value in test_groups.items())
        return self._ci_test_groups
    def format_test_group_alias(self, name, fallback=''):  
        """Return a test group alias using the given name and fallback."""
        group_numbers = self.ci_test_groups.get(name, None)
        if group_numbers:
            if min(group_numbers) != 1:
                display.warning('Min test group "%s" in %s is %d instead of 1.' % (name, self.CI_YML, min(group_numbers)), unique=True)
            if max(group_numbers) != len(group_numbers):
                display.warning('Max test group "%s" in %s is %d instead of %d.' % (name, self.CI_YML, max(group_numbers), len(group_numbers)), unique=True)
            if max(group_numbers) > 9:
                alias = '%s/%s/group(%s)/' % (self.TEST_ALIAS_PREFIX, name, '|'.join(str(i) for i in range(min(group_numbers), max(group_numbers) + 1)))
            elif len(group_numbers) > 1:
                alias = '%s/%s/group[%d-%d]/' % (self.TEST_ALIAS_PREFIX, name, min(group_numbers), max(group_numbers))
            else:
                alias = '%s/%s/group%d/' % (self.TEST_ALIAS_PREFIX, name, min(group_numbers))
        elif fallback:
            alias = '%s/%s/group%d/' % (self.TEST_ALIAS_PREFIX, fallback, 1)
        else:
            raise Exception('cannot find test group "%s" in %s' % (name, self.CI_YML))
        return alias
    def load_yaml(self, python, path):