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##### SUMMARY
<!--- Explain the problem briefly below, add suggestions to wording or structure -->

Following merge of #59716 revamping ios_facts module, the doc states the 'min' subset in examples but it's not defined in 'Documentation' supported options.
And in module_utils/network/ios/facts/facts.py ; the dict FACT_LEGACY_SUBSETS doesn't mention this 'min' subset.

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##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
<!--- Write the short name of the rst file, module, plugin, task or feature below, use your best guess if unsure -->
ios_facts module

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
2.9
```

##### ADDITIONAL INFORMATION
<!--- Describe how this improves the documentation, e.g. before/after situation or screenshots -->

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ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ['preview'],
                    'supported_by': 'network'}
DOCUMENTATION = """
---
module: ios_facts
version_added: "2.2"
author:
  - "Peter Sprygada (@privateip)"
  - "Sumit Jaiswal (@justjais)"