Add toc and index for reservoir ddms websocket API tutorial

Author: Bharathi Selvaraj

articles/energy-data-services/index.yml

@@ -74,6 +74,8 @@ landingContent:
             url: tutorial-petrel-ddms.md
           - text: Reservoir DDMS API tutorial
             url: tutorial-reservoir-ddms-apis.md
+          - text: Reservoir DDMS websocket API tutorial
+            url: tutorial-reservoir-ddms-websocket-apis.md
       - linkListType: how-to-guide
         links:
           - text: How to convert SEG-Y to oVDS

articles/energy-data-services/toc.yml

@@ -36,6 +36,8 @@ items:
       href: tutorial-petrel-ddms.md
     - name: Use Reservoir DDMS APIs
       href: tutorial-reservoir-ddms-apis.md
+    - name: Use Reservoir DDMS websocket APIs
+      href: tutorial-reservoir-ddms-websocket-apis.md
 - name: Concepts
   items:
     - name: OSDU® services available on Azure Data Manager for Energy

articles/energy-data-services/tutorial-reservoir-ddms-apis.md

@@ -11,7 +11,7 @@ ms.date: 02/12/2025
 #customer intent: As a Data Manager, I want to learn how to use OSDU Reservoir DDMS APIs to read reservoir data.
 
 ---
-# Use Reservoir DDMS APIs
+# Tutorial: Use Reservoir DDMS API endpoints
 
 In this article, you learn how to read data from Reservoir DDMS REST APIs with curl commands. 
 
@@ -517,3 +517,6 @@ In this article, you learn how to read data from Reservoir DDMS REST APIs with c
     	}
     ]
     ```
+
+## Related content
+[Tutorial: Use Reservoir DDMS websocket API endpoints](tutorial-reservoir-ddms-websocket.md)

articles/energy-data-services/tutorial-reservoir-ddms-websocket.md

@@ -77,4 +77,5 @@ For more information about DDMS, see [DDMS concepts](concepts-ddms.md).
     ```
 
 ## Related content
-* [How to use RDDMS web socket endpoints](https://community.opengroup.org/osdu/platform/domain-data-mgmt-services/reservoir/open-etp-server/-/blob/main/docs/testing.md?ref_type=heads)
+* [How to use RDDMS web socket endpoints](https://community.opengroup.org/osdu/platform/domain-data-mgmt-services/reservoir/open-etp-server/-/blob/main/docs/testing.md?ref_type=heads)
+* [Use Reservoir DDMS APIs](tutorial-reservoir-ddms-apis.md)