Update build-a-k-nearest-neighbor-model-with-p5js.mdx

Author: sonnynomnom

projects/build-a-k-nearest-neighbor-model-with-p5js/build-a-k-nearest-neighbor-model-with-p5js.mdx

@@ -265,6 +265,8 @@ Want to level it up? Try these bonus challenges:
 - Add your own style! Rather than red and green points, you could draw your points as wizard 🧙‍♂️ or warrior ⚔️ emojis (calling back to our original example). Or come up with your own theme! Could you do something interesting with the background?
 - KNN models can work with multi-class problems. Rather than simply red and green points, what if you had red, green, and blue points? Refactor your code so your visualization works with _any_ number of classes.
 
+Let me know what variations you have created by tagging [@alexbkuntz](https://x.com/AlexBKuntz) and [@codedex_io](https://x.com/codedex_io) on Twitter or IG!
+
 ### Project Walkthrough
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/uq0kvzBX6uU?si=r4GbxX5BBG953-Ad" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>