### 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
"""Write lint results to stdout."""
        if self.summary:
            command = self.format_command()
            message = 'The test `%s` failed. See stderr output for details.' % command
            path = ''
            message = TestMessage(message, path)
            print(message)
        else:
            for message in self.messages:
                print(message)
    def write_junit(self, args):  
        """Write results to a junit XML file."""
        title = self.format_title()
        output = self.format_block()
        test_case = junit_xml.TestCase(
            classname=self.command,
            name=self.name,
            failures=[
                junit_xml.TestFailure(
                    message=title,
                    output=output,
                ),
            ],
        )
        self.save_junit(args, test_case)
    def write_bot(self, args):