How about changing "Training" folder to "Technical Training" - so it will be clear of how it is different from "Being a Gizra Employee"
Maybe change "How and what to document" to "Work Processes" and move "How to submit a PR.." and "Pull Requests" chapters under there.
Under "Being a Gizra Employee" will include only soft skills/information. That means moving "Thinking of Quitting" under there and erasing "Work life balance" folder. Will this change the url? I know that Amitai shared this chapter on twitter and I don't want to break the link.
Change the menu order - put chapters under "Being Gizra employee" folder.