review updates

Author: Phil Meadows

articles/index.yml

@@ -86,11 +86,11 @@ productDirectory:
       url: open-datasets/index.yml
     # Card
     - title: Azure RTOS
-      summary: Azure RTOS is a real-time operating system and embedded development suite for resource-constrained devices
+      summary: Making embedded IoT development and connectivity easy
       imageSrc: https://static.docs.com/ui/media/product/azure/rtos.svg
       azureCategories:
         - iot
-      url: https://docs.microsoft.com/azure/rtos/index.yml
+      url: https://docs.microsoft.com/azure/rtos/
     # Card
     - title: Bing Autosuggest
       summary: Give your app intelligent autosuggest options for searches