Update Setup.md

Update cleanup notes to ensure that the HTTPS protocol is used when copying and pasting the final web URL in the Azure AD configuration update.

Setup.md

@@ -87,7 +87,7 @@ That's it. Click "Purchase" (there's no charge for this software - you are agree
 __Cleanup__
 
 Now that the app is deployed, there's a final step. We need to go back into our Azure Active Directory apps and update the URLs to match the URL of our new web app.
-  * Navigate to your new web application - it's under "App Services". Click to copy the URL.
+  * Navigate to your new web application - it's under "App Services". Click to copy the URL. __NOTE: this URL will not be using the HTTPS protocol - you will need to add the "s" to the protocol after you paste it in.__
 
     ![alt text][Url]