fix: update DA diagram link (#174)

Author: piyush117

ibm_catalog.json

@@ -597,7 +597,7 @@
               {
                 "diagram": {
                   "caption": "IBM MQ on Cloud",
-                  "url": "https://raw.githubusercontent.com/terraform-ibm-modules/terraform-ibm-mq-cloud/main/reference-architecture/deployable-architecture-mqcloud.svg",
+                  "url": "https://raw.githubusercontent.com/terraform-ibm-modules/terraform-ibm-mq-cloud/main/reference-architectures/deployable-architecture-mqcloud.svg",
                   "type": "image/svg+xml"
                 },
                 "description": "This deployable architecture creates an instance of <b>IBM MQ on Cloud</b>, providing a secure, scalable, and fully managed messaging service for applications. After you deploy this solution, you can access the IBM MQ on Cloud dashboard to create and configure queue managers, manage message queues, and integrate them into your applications by using industry-standard messaging protocols.<br><br>Optionally, you can deploy Secrets Manager to securely store and manage TLS certificates and other sensitive credentials that IBM MQ on Cloud requires. By doing so, you help ensure secure connectivity and compliance.<br><br>You can also enable observability services such as Cloud Monitoring, Cloud Logs, and Activity Tracker Event Routing to gain operational visibility into your IBM MQ on Cloud workloads. These capabilities allow you to collect and analyze metrics such as CPU and memory usage, track user and application interactions, and monitor platform logs for troubleshooting and audit purposes."