### 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
"""Print out the test results in json format
        warnings is not respected in this output
        """
        ret = [len(r['errors']) for r in self.files.values()]
        with Reporter._output_handle(output) as handle:
            print(json.dumps(Reporter._filter_out_ok(self.files), indent=4, cls=ReporterEncoder), file=handle)
        return 3 if sum(ret) else 0
class Validator(with_metaclass(abc.ABCMeta, object)):
    """Validator instances are intended to be run on a single object.  if you
    are scanning multiple objects for problems, you'll want to have a separate
    Validator for each one."""
    def __init__(self, reporter=None):
        self.reporter = reporter
    @property
    @abc.abstractmethod
    def object_name(self):
        """Name of the object we validated"""
        pass
    @property
    @abc.abstractmethod
    def object_path(self):
        """Path of the object we validated"""
        pass
    @abc.abstractmethod
    def validate(self):
        """Run this method to generate the test results"""
        pass
class ModuleValidator(Validator):