Add another H2

Author: sethmanheim

articles/notification-hubs/notification-hubs-tls12.md

@@ -13,7 +13,7 @@ ms.workload: mobile
 ms.tgt_pltfrm: mobile-multiple
 ms.devlang: multiple
 ms.topic: article
-ms.date: 01/28/2020
+ms.date: 01/30/2020
 ms.author: sethm
 ms.reviewer: jowargo
 ms.lastreviewed: 01/28/2020
@@ -25,6 +25,8 @@ To ensure a higher level of security, Notification Hubs will disable support for
 
 We recommend that you review your all of your applications that use Azure Notification Hubs, to ensure that they use the most applicable libraries and TLS stacks that support TLS 1.2.
 
+## Update apps
+
 You can ensure that your iOS apps are using TLS 1.2 using Apple's networking security feature called App Transport Security (ATS). ATS cannot be used for SDKs older than iOS 9.0 or macOS 10.11, and you can read further about it from [Apple's documentation](https://developer.apple.com/documentation/security/preventing_insecure_network_connections).
 
 For Android applications using SSLSocket instances, set enabled protocols on each SSLSocket instance as noted in [setEnabledProtocols](https://developer.android.com/reference/javax/net/ssl/SSLSocket#setEnabledProtocols(java.lang.String%5B%5D)).