Another small change.

Author: robinsh

articles/iot-hub/index.yml

@@ -80,23 +80,23 @@ landingContent:
           url: tutorial-routing-config-message-routing-rm-template.md
         - text: Run and view routing results
           url: tutorial-routing-view-message-routing-results.md
- - title: IoT Security and using security certificates
+ -   title: Use IoT Hub Tools
+     linkLists:
+     -  linkListType: how-to-guide
+        links:
+        - text: Using IoT Tools for VS Code
+          url: iot-hub-create-use-iot-toolkit.md
+        - text: IoT Explorer
+          url: ../iot-pnp/howto-install-iot-explorer.md
+ - title: Using IoT Security certificates
    linkLists:
      - linkListType: concept
        links:
-         - text: Device Authentication using X.509 CA verts
+         - text: Control access to IoT Hub
+           url: iot-hub-devguide-security.md
+         - text: Device Authentication using X.509 CA certs
            url: iot-hub-x509ca-overview.md
          - text: X.509 security with IoT Hub
            url: iot-hub-security-x509-get-started.md
          - text: X.509 CA cert security concepts
            url: iot-hub-x509ca-concept.md
-         - text: Control access to IoT Hub
-           url: iot-hub-devguide-security.md
- -   title: Use IoT Hub Tools
-     linkLists:
-     -  linkListType: how-to-guide
-        links:
-        - text: Using IoT Tools for VS Code
-          url: iot-hub-create-use-iot-toolkit.md
-        - text: IoT Explorer
-          url: ../iot-pnp/howto-install-iot-explorer.md