specify licenses in package.json

[zeke]

This project has two licenses, one for code (MIT) and one for content (Creative Commons):

• https://github.com/github/docs/blob/main/LICENSE
• https://github.com/github/docs/blob/main/content/LICENSE

This PR adds a license property to the package.json file with those two licenses in the form (MIT AND CC-BY-4.0), as recommended by the npm docs and the SPDX docs on Representing Mulitple Licenses.

cc @github/docs

[jeffmcaffer]

LGTM

[hubot]

📚 Thanks for the docs ping! 🛎️ This was added to the @github/docs-content first-responder project board. A team member will be along shortly to review this for docs impact, but you can also open a docs issue to request docs updates.

The @github/docs team has several sub-teams including content, design, product, and engineering. If this is a request for updates to docs.github.com content, please ping the @github/docs-content team.

[github-actions]

Thanks very much for contributing! Your pull request has been merged 🎉 You should see your changes appear on the site in approximately 24 hours. To add your ✨ contribution to the README.md, create a new comment in this PR with:

@all-contributors please add @zeke for docs

If you want to, you can use the emoji key to replace docs with a different contribution type.

[allcontributors]

@github-actions[bot]

I could not determine your intention.

Basic usage: @all-contributors please add @Someone for code, doc and infra

For other usages see the documentation