Add node for connect and test

Author: cwatson-cat

articles/iot/TOC.yml

@@ -59,10 +59,6 @@ items:
     items:
     - name: Overview
       href: overview-iot-plug-and-play.md
-    - name: Turn your smartphone into an IoT device
-      href: iot-phone-app-how-to.md
-    - name: Test your IoT Plug and Play device
-      href: howto-use-iot-explorer.md
     - name: Architecture
       href: concepts-architecture.md
     - name: IoT Plug and Play conventions
@@ -99,6 +95,13 @@ items:
     - name: Enable industrial dataspace in Azure
       href: howto-iot-industrial-dataspaces.md
 
+  - name: Connect and test IoT devices
+    items:
+    - name: Turn your smartphone into an IoT device
+      href: iot-phone-app-how-to.md
+    - name: Test your IoT Plug and Play device
+      href: howto-use-iot-explorer.md
+      
   - name: References
     items:
     - name: Support and help options