### 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 powershell:
            return
        for line_no, line in enumerate(self.text.splitlines()):
            typekeyword = TYPE_REGEX.match(line)
            if typekeyword:
                
                self.reporter.error(
                    path=self.object_path,
                    code='unidiomatic-typecheck',
                    msg=('Type comparison using type() found. '
                         'Use isinstance() instead'),
                    line=line_no + 1
                )
    def _check_for_sys_exit(self):
        
        if 'sys.exit' not in self.text:
            return
        for line_no, line in enumerate(self.text.splitlines()):
            sys_exit_usage = SYS_EXIT_REGEX.match(line)
            if sys_exit_usage:
                
                self.reporter.error(
                    path=self.object_path,
                    code='use-fail-json-not-sys-exit',
                    msg='sys.exit() call found. Should be exit_json/fail_json',
                    line=line_no + 1
                )
    def _check_gpl3_header(self):