Update funding link for Fluidity index applications

Author: ngoiyaeric

README.md

@@ -7,7 +7,7 @@ Artificial General intelligence is a system describing the interoperation of inc
 ## Research 
 
 - [Fluidity index](https://arxiv.org/abs/2510.20636v1): Next-Generation Super-Intelligence benchmarks: [Demo](https://fluid-phi.vercel.app/) 
-- Fluidity index Applications in New knowledge creation. [Fund us](https://paypal.me/queuenorth) 
+- Fluidity index Applications in New knowledge creation. [Fund us](https://buy.stripe.com/3cIbJ10hF8ebaIQ5l3asg01) 
 
 [Lab](https://discord.gg/NqGY9EWjWj) count: 211