I agree with you on this. This repository is not a major framework or application. Rather it is something simple to contribute to and you walk people though it step by step. There is a lot of fear around making your first Github contribution. “Will I screw up someone’s repository”? “What if I screw up’?
This won’t help with submitting buggy code but it should relieve any angst around getting involved. And that is a great first step.