### 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
path=self.object_path,
                    code='invalid-requires-extension',
                    msg='Module #Requires should not end in .psm1: "%s"' % module_name
                )
        for req_stmt in re.finditer(csharp_requires, self.text):
            found_requires = True
            
            module_list = [x.strip() for x in req_stmt.group(1).split(',')]
            if len(module_list) > 1:
                self.reporter.error(
                    path=self.object_path,
                    code='multiple-csharp-utils-per-requires',
                    msg='Ansible C# util requirements do not support multiple utils per statement: "%s"' % req_stmt.group(0)
                )
                continue
            module_name = module_list[0]
            if module_name.lower().endswith('.cs'):
                self.reporter.error(
                    path=self.object_path,
                    code='illegal-extension-cs',
                    msg='Module #AnsibleRequires -CSharpUtil should not end in .cs: "%s"' % module_name
                )
        
        if not found_requires and REPLACER_WINDOWS not in self.text:
            self.reporter.error(
                path=self.object_path,
                code='missing-module-utils-import-csharp-requirements',
                msg='No Ansible.ModuleUtils or C# Ansible util requirements/imports found'
            )
    def _find_ps_docs_py_file(self):