### 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
"""Sanity test to evaluate integration test aliases."""
    CI_YML = '.azure-pipelines/azure-pipelines.yml'
    TEST_ALIAS_PREFIX = 'shippable'  
    DISABLED = 'disabled/'
    UNSTABLE = 'unstable/'
    UNSUPPORTED = 'unsupported/'
    EXPLAIN_URL = 'https://docs.ansible.com/ansible/devel/dev_guide/testing/sanity/integration-aliases.html'
    TEMPLATE_DISABLED = """
    The following integration tests are **disabled** [[explain]({explain_url}#disabled)]:
    {tests}
    Consider fixing the integration tests before or alongside changes.
    """
    TEMPLATE_UNSTABLE = """
    The following integration tests are **unstable** [[explain]({explain_url}#unstable)]:
    {tests}
    Tests may need to be restarted due to failures unrelated to changes.
    """
    TEMPLATE_UNSUPPORTED = """
    The following integration tests are **unsupported** [[explain]({explain_url}#unsupported)]:
    {tests}
    Consider running the tests manually or extending test infrastructure to add support.
    """
    TEMPLATE_UNTESTED = """
    The following modules have **no integration tests** [[explain]({explain_url}#untested)]:
    {tests}
    Consider adding integration tests before or alongside changes.
    """
    ansible_only = True
    def __init__(self):