edit subscription id and removed the email content from the files

Author: Supriya-R-Dixit

articles/event-grid/includes/contact-resource-notifications.md

@@ -10,7 +10,7 @@
 ---
 
 ## Contact us
-If you have any questions or feedback on this feature, don't hesitate to reach us at [[email protected]](mailto:arnsupport@microsoft.com). 
+If you have any questions or feedback on this feature, don't hesitate to reach us at this [stackoverflow link](https://stackoverflow.microsoft.com/posts/tagged/24358)
 
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