OSSM-6396 Move Upgrading Service Mesh beneath Service Mesh 2.x Release Notes

Author: gwynnemonahan

_topic_maps/_topic_map.yml

@@ -3841,6 +3841,8 @@ Topics:
     File: ossm-about
   - Name: Service Mesh 2.x release notes
     File: servicemesh-release-notes
+  - Name: Upgrading Service Mesh
+    File: upgrading-ossm
   - Name: Understanding Service Mesh
     File: ossm-architecture
   - Name: Service Mesh deployment models
@@ -3857,8 +3859,6 @@ Topics:
     File: ossm-create-mesh
   - Name: Enabling sidecar injection
     File: prepare-to-deploy-applications-ossm
-  - Name: Upgrading Service Mesh
-    File: upgrading-ossm
   - Name: Managing users and profiles
     File: ossm-profiles-users
   - Name: Security