### 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
"""Validate explicit runtime metadata file"""
    try:
        with open(path, 'r') as f_path:
            routing = yaml.safe_load(f_path)
    except yaml.error.MarkedYAMLError as ex:
        print('%s:%d:%d: YAML load failed: %s' % (path, ex.context_mark.line +
                                                  1, ex.context_mark.column + 1, re.sub(r'\s+', ' ', str(ex))))
        return
    except Exception as ex:  
        print('%s:%d:%d: YAML load failed: %s' %
              (path, 0, 0, re.sub(r'\s+', ' ', str(ex))))
        return
    if is_ansible:
        current_version = get_ansible_version()
    else:
        current_version = get_collection_version()
    
    
    
    avoid_additional_data = Schema(
        Any(
            {