Moodle Project is the best example of a community project and the Moodle Community is growing better day by day. Moodle Docs is a great resource for all Moodle users which is created by Moodle Community members from all over the world.
If you are also using Moodle for your institution/organization, then for sure you might have taken help from some of the Moodle docs which were written by some other community member. So, its time to payback the community by contributing in improving the documentation.
Here are the guidelines mentioned for contributing to the Moodle Docs, so if you find something which can be improved either in content, grammar or formatting, and fix it!
You can read the Guidelines for Contributors here – https://docs.moodle.org/30/en/MoodleDocs:Guidelines_for_contributors
Moreover by contributing to the Moodle Documentation, you will also earn a Documentation Writers Badge.