chore(papi-simulator): add polkadot assethub payment address

Author: developerfred

deliveries/papi-simulator-milestone-one.md

@@ -3,7 +3,7 @@
 * **Name of the grant project:** Polkadot API Playground  
 * **Application Document:** [Polkadot API Playground Application](https://github.com/Polkadot-Fast-Grants/apply/pull/4)
 * **Milestone Number:** 1
-
+* **DOT Payment Address:** 13eJfzT8u1qKYkFDW6o7Ta19eGi9X8Y74cWLDComEVxbKGMa
 
 ## Context
 
@@ -51,4 +51,4 @@ Key features implemented:
 
 The deployed application is available at [papi-simulator.aipop.fun](https://papi-simulator.aipop.fun/).
 
-Repository: [https://github.com/developerfred/papi-simulator](https://github.com/developerfred/papi-simulator)
+Repository: [https://github.com/developerfred/papi-simulator](https://github.com/developerfred/papi-simulator)