Fix link to spring apps reference implementation

Azure Spring Apps Reference Implementation repository was renamed due to LZA effort. This commit updates the link in the public documentation to refer to the correct link.

Author: kriation

articles/spring-apps/reference-architecture.md

@@ -278,7 +278,7 @@ Explore this reference architecture through the ARM, Terraform, and Azure CLI de
 [7]: ../web-application-firewall/index.yml
 [8]: ./how-to-config-server.md
 [9]: https://steeltoe.io/
-[10]: https://github.com/Azure/azure-spring-apps-reference-architecture
+[10]: https://github.com/Azure/azure-spring-apps-landing-zone-accelerator
 [11]: ./how-to-deploy-in-azure-virtual-network.md#virtual-network-requirements
 [12]: ./vnet-customer-responsibilities.md#azure-spring-apps-network-requirements
 [13]: ./vnet-customer-responsibilities.md#azure-spring-apps-fqdn-requirements--application-rules