Summary

• Replaces the broken reference to a non-existent .github/workflows/run.yml reusable workflow with a self-contained GitHub Actions workflow snippet demonstrating how to use --gh-matrix to dynamically generate a test matrix.
• Adds a new Skip functionality section documenting the skip option for both pyproject.toml and tox-ansible.ini.

Details

The previous CI/CD pipeline section referenced ansible/tox-ansible/.github/workflows/run.yml@main, which does not exist. This caused confusion for users trying to integrate tox-ansible into their GitHub Actions pipelines (see #548).

The updated section:

• Explains how tox-ansible generates a GitHub Actions matrix using --gh-matrix and --ansible flags.
• Shows a two-job workflow pattern: a generate-matrix job that produces the envlist output, and a tox-ansible job that consumes it via a matrix strategy.
• Includes a note that the snippet is illustrative and not production-ready (Python setup and tox-ansible installation steps are omitted for readability).

Fixes #548

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