### Summary

EXAMPLES are intended to be copy-and-paste ready.

While most of the documentation is expected to be a single document, it's reasonable to expect that within examples (especially for inventory plugins), there may be multiple documents in there.  If only a single document is permitted, then when multiple examples are added for an inventory plugin, attempting to lint the YAML results in key-duplicates errors.

See also https://github.com/ansible/ansible-lint/issues/3860

### Issue Type

Feature Idea

### Component Name

ansible-test

### Additional Information



```yaml (paste below)
EXAMPLES = r""" 
---

# Example using groups to assign the running hosts to a group based on vpc_id
plugin: amazon.aws.aws_ec2
profile: aws_profile
# Populate inventory with instances in these regions
regions:
  - us-east-2
filters:
  # All instances with their state as `running`
  instance-state-name: running
keyed_groups:
  - prefix: tag
    key: tags
compose:
  ansible_host: public_dns_name
groups:
  libvpc: vpc_id == 'vpc-####'

---

# Define prefix and suffix for host variables coming from AWS.
plugin: amazon.aws.aws_ec2
regions:
  - us-east-1
hostvars_prefix: 'aws_'
hostvars_suffix: '_ec2'
"""
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
"""Wrapper around yamllint that supports YAML embedded in Ansible modules."""
from __future__ import annotations
import ast
import json
import os
import re
import sys
import typing as t
import yaml
from yaml.resolver import Resolver
from yaml.constructor import SafeConstructor
from yaml.error import MarkedYAMLError
from yaml.cyaml import CParser
from yamllint import linter
from yamllint.config import YamlLintConfig
def main():
    """Main program body."""
    paths = sys.argv[1:] or sys.stdin.read().splitlines()
    checker = YamlChecker()
    checker.check(paths)
    checker.report()
class TestConstructor(SafeConstructor):
    """Yaml Safe Constructor that knows about Ansible tags."""
    def construct_yaml_unsafe(self, node):