### 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
for root, dirs, files in os.walk(module):
            basedir = root[len(module) + 1:].split('/', 1)[0]
            if basedir in REJECTLIST_DIRS:
                continue
            for dirname in dirs:
                if root == module and dirname in REJECTLIST_DIRS:
                    continue
                path = os.path.join(root, dirname)
                if args.exclude and args.exclude.search(path):
                    continue
                check_dirs.add(path)
            for filename in files:
                path = os.path.join(root, filename)
                if args.exclude and args.exclude.search(path):
                    continue
                if ModuleValidator.is_on_rejectlist(path):
                    continue
                with ModuleValidator(path, collection=args.collection, collection_version=args.collection_version,
                                     analyze_arg_spec=args.arg_spec, base_branch=args.base_branch,
                                     git_cache=git_cache, reporter=reporter, routing=routing) as mv2:
                    mv2.validate()
    if not args.collection:
        for path in sorted(check_dirs):
            pv = PythonPackageValidator(path, reporter=reporter)
            pv.validate()
    if args.format == 'plain':
        sys.exit(reporter.plain(warnings=args.warnings, output=args.output))
    else:
        sys.exit(reporter.json(warnings=args.warnings, output=args.output))
class GitCache: