Review licensing
After revisiting our review guidelines and GNOME Shell's GPL-v2.0-or-later
licensing, it appears we need to look into how gjs.guide is licensed. Maybe different licensing is allowed, but we definitely need to be clear about our code sample and tutorials.
I think all extensions-related samples would fall under GPL-v2.0-or-later
like extensions themselves, but I don't think we need to care about developers giving attribution to gjs.guide for code snippets as long as the GPL is respected. Most of them are fairly small and "obvious to anyone in the field".