Update application_controller.rb

Author: Cory Fowler

app/controllers/application_controller.rb

@@ -1,6 +1,6 @@
 class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception 
   def hello
-    render html: "Hello, world from Azure Web App on Linux!"
+    render html: "Hello, world from Azure App Service on Linux!"
   end
-end
+end