Merge pull request #42512 from robinsh/robinsh-0530

Add IOS back in to the landing page.

Author: ktoliver

articles/iot-hub/index.yml

@@ -27,13 +27,16 @@ sections:
           src: https://docs.microsoft.com/media/logos/logo_java.svg
       - image:
           src: https://docs.microsoft.com/media/logos/logo_python.svg
+      - image:
+          src: https://docs.microsoft.com/media/logos/logo_ios.svg
     rows:
       - title: Send telemetry
         values: 
         - href: /azure/iot-hub/quickstart-send-telemetry-node
         - href: /azure/iot-hub/quickstart-send-telemetry-dotnet
         - href: /azure/iot-hub/quickstart-send-telemetry-java
         - href: /azure/iot-hub/quickstart-send-telemetry-python
+        - href: /azure/iot-hub/quickstart-send-telemetry-ios
       - title: Control a device
         values: 
         - href: /azure/iot-hub/quickstart-control-device-node