Update the link to the nannou egui integration. (#1827)

The project has now moved to the official repository. The old is an archived repo.
Thanks

README.md

@@ -185,7 +185,7 @@ These are the official egui integrations:
 * [`fltk-egui`](https://crates.io/crates/fltk-egui) for [fltk-rs](https://github.com/fltk-rs/fltk-rs).
 * [`ggez-egui`](https://github.com/NemuiSen/ggez-egui) for the [ggez](https://ggez.rs/) game framework.
 * [`godot-egui`](https://github.com/setzer22/godot-egui) for [godot-rust](https://github.com/godot-rust/godot-rust).
-* [`nannou_egui`](https://github.com/AlexEne/nannou_egui) for [nannou](https://nannou.cc).
+* [`nannou_egui`](https://github.com/nannou-org/nannou/tree/master/nannou_egui) for [nannou](https://nannou.cc).
 * [`notan_egui`](https://github.com/Nazariglez/notan/tree/main/crates/notan_egui) for [notan](https://github.com/Nazariglez/notan).
 * [`screen-13-egui`](https://github.com/attackgoat/screen-13/tree/master/contrib/screen-13-egui) for [Screen 13](https://github.com/attackgoat/screen-13).
 * [`smithay-egui`](https://github.com/Smithay/smithay-egui) for [smithay](https://github.com/Smithay/smithay/).