feat: update README.md for example feature

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes #
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

[github-actions]

👋 Hi @JoshuaKGoldberg, thanks for the pull request! A scan flagged some concerns with it. Could you please take a look?

[pr-body-not-empty] This PR's description doesn't contain any content beyond the template. This repository expects pull requests to include a description explaining the changes. The description should have at least one word not in the PR template, or any content if no template exists. Please add a description explaining the purpose and changes in this PR.

[pr-linked-issue] This pull request is not linked as closing any issues. This repository keeps to GitHub issues for discussing potential changes. Most or all changes should be marked as approved in an issue before a pull request is sent to resolve them. To resolve this report:

• If this is a straightforward documentation change that doesn't need an issue, you can ignore this report
• If there is a backing issue, add a 'fixes #...' link to the pull request body
• Otherwise, file an issue explaining what you'd like to happen

🗺️ This message was posted automatically by OctoGuide: a bot for GitHub repository best practices.