Update README.md

Author: glibnub

README.md

@@ -1,10 +1,11 @@
 ---
-topic: Python Flask sample for Azure App Service (Linux)
+page_type: sample
+description: "This is a minimal sample app that demonstrates how to run a Python Flask application on Azure App Service on Linux."
 languages:
-  - python
+- python
 products:
-  - Azure App Service
-  - Azure Web Apps
+- azure
+- azure-app-service
 ---
 
 # Python Flask sample for Azure App Service (Linux)