The Plone Documentation by Plone Foundation is licensed under a Creative Commons Attribution 4.0 International License.
If you want to contribute to this documentation, you can do so directly by making a pull request, if you have filled out a Contributor Agreement.
If you haven’t filled in a Contributor Agreement, you can still contribute. Contact the Documentation team, for instance via our community space.
Basically, all we need is your written confirmation that you are agreeing your contribution can be under Creative Commons.
You can also add in a comment with your pull request “I, <full name>, agree to have this published under Creative Commons 4.0 International BY”.