Reference possibility of stating problems/issues with book on GitHub

[Datseris]

In chapter 1 we cite the GitHub repository of the book. Part of this repository is the very nice ability to have open discussion on potential things that are incorrect in the book (such as typos), or sections that may be better explained or missing. So, in the book we should actively motivate readers to contribute/open issues on this GitHub page!

(we only cite the GitHub page, but we don't present it with its full potential)