### 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
msg += " found in %s" % " -> ".join(context)
                msg += " has repeated terms in requirements"
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-requirements-collision',
                    msg=msg,
                )
            if not set(requirements) <= set(spec):
                msg = "required_if"
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " contains terms in requirements which are not part of argument_spec: %s" % ", ".join(sorted(set(requirements).difference(set(spec))))
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-requirements-unknown',
                    msg=msg,
                )
            key = check[0]
            if key not in spec:
                msg = "required_if"
                if context:
                    msg += " found in %s" % " -> ".join(context)
                msg += " must have its key %s in argument_spec" % key
                self.reporter.error(
                    path=self.object_path,
                    code='required_if-unknown-key',
                    msg=msg,
                )
                continue
            if key in requirements: