docs: add examples for validating minimum operating system version with Microsoft/OSInfo

[Gijsreyn]

PR Summary

This pull request updates the Microsoft/OSInfo with the version comparisons implemented in #1603, including an example added.

PR Context

After addressing #1603.

[Copilot]

Pull request overview

Updates the Microsoft/OSInfo resource reference docs to reflect the newly implemented test operation and to document/version-example the version comparison constraint support added in #1603.

Changes:

• Update Microsoft/OSInfo resource reference to describe native test behavior and version constraint syntax.
• Add a new example demonstrating enforcing a minimum OS version via Microsoft.DSC/Assertion.
• Wire the new example into the resource docs “Examples” list.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
docs/reference/resources/Microsoft/OSInfo/index.md	Updates resource description/capabilities and documents version comparison constraints; links the new example.
docs/reference/resources/Microsoft/OSInfo/examples/validate-minimum-version.md	Adds a new walkthrough example and sample output for minimum-version validation.
docs/reference/resources/Microsoft/OSInfo/examples/validate-minimum-version.config.dsc.yaml	Adds the DSC configuration document used by the new example.