added to the TOC

Author: spelluru

articles/service-bus-messaging/TOC.yml

@@ -213,6 +213,8 @@
   - name: Troubleshoot
     items:
     - name: Troubleshooting guide
+      href: service-bus-troubleshooting-guide.md
+    - name: Messaging exceptions
       href: service-bus-messaging-exceptions.md
     - name: Resource Manager exceptions
       href: service-bus-resource-manager-exceptions.md