### 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
"""Return a tuple with all the immutable values of this test message."""
        return self.__path, self.__line, self.__column, self.__level, self.__code, self.__message
    def __lt__(self, other):
        return self.tuple < other.tuple
    def __le__(self, other):
        return self.tuple <= other.tuple
    def __eq__(self, other):
        return self.tuple == other.tuple
    def __ne__(self, other):
        return self.tuple != other.tuple
    def __gt__(self, other):
        return self.tuple > other.tuple
    def __ge__(self, other):
        return self.tuple >= other.tuple
    def __hash__(self):
        return hash(self.tuple)
    def __str__(self):
        return self.format()
    def format(self, show_confidence=False):  
        """Return a string representation of this message, optionally including the confidence level."""
        if self.__code:
            msg = '%s: %s' % (self.__code, self.__message)
        else:
            msg = self.__message
        if show_confidence and self.confidence is not None:
            msg += ' (%d%%)' % self.confidence
        return '%s:%s:%s: %s' % (self.__path, self.__line, self.__column, msg)