There now is a QOwnNotes release for Fedora Linux 25 and a new documentation page.
Visit the installation page for more information on how to install the Fedora 25 release of QOwnNotes.
The new documentation page you will find on docs.qownnotes.org. It currently mainly exists of the scripting documentation.
If you want to help writing documentation you can add reStrucuturedText files in the documentation folder on GitHub.
(image by fossbytes.com)