### 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
if version <= current_version:
                    raise Invalid('The deprecation removal_version (%r) must be after the '
                                  'current version (%s)' % (value, current_version))
    except ValueError:
        raise Invalid(msg)
    return value
def any_value(value):
    """Accepts anything."""
    return value
def get_ansible_version():
    """Return current ansible-core version"""
    from ansible.release import __version__
    return LooseVersion('.'.join(__version__.split('.')[:3]))
def get_collection_version():
    """Return current collection version, or None if it is not available"""
    import importlib.util
    collection_detail_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'tools', 'collection_detail.py')
    collection_detail_spec = importlib.util.spec_from_file_location('collection_detail', collection_detail_path)
    collection_detail = importlib.util.module_from_spec(collection_detail_spec)
    sys.modules['collection_detail'] = collection_detail
    collection_detail_spec.loader.exec_module(collection_detail)
    
    try:
        result = collection_detail.read_manifest_json('.') or collection_detail.read_galaxy_yml('.')
        return SemanticVersion(result['version'])
    except Exception:  
        
        
        return None
def validate_metadata_file(path, is_ansible, check_deprecation_dates=False):