fix: add backers image from Open Collective to about page

Author: Bentroen

web/src/app/(content)/(info)/about/about.mdx

@@ -25,3 +25,5 @@ With openness as one of our core premises and as a way to give back to our incre
 ## Acknowledgments
 
 Note Block World is made possible by our amazing community of note block enthusiasts, musicians, and supporters — especially our financial contributors, who allowed us to launch this website and keep it up to this day. Thank you for staying with us! 💚🎶
+
+<img src="https://opencollective.com/opennbs/backers.svg" alt="Backers" className="h-14 mt-8" />