We encourage anyone to contribute issues, feedback and so on via logging an issue. Once the OWASP Top 10 has been released, it might be a while before that feedback is incorporated into the next version (up to 3 years).
If you are interested in translating the OWASP Top 10, please contact @owasptop10 on Twitter - someone else might already be working on your language, and you can help that effort instead of doing it over. Generally, we will create a project for you, or you can fork the main repo and provide us a pull request once you're done. To maintain traceability, we do ask that you translate the markdown as well, as that's what is included in the Wiki version.
You are more than welcome to fork the OWASP Top 10, but please abide by the Creative Commons BY-SA 4.0 license.
We welcome pull requests for fixes, but again, it might be a while before we accept any changes to the final version of the OWASP Top 10.