Add header

Author: sethmanheim

azure-stack/operator/release-notes-security-updates.md

@@ -17,6 +17,8 @@ This article lists all the security updates in the last three updates of Azure S
 
 ::: moniker range="azs-2406"
 
+## 2406 update
+
 Because of the cumulative nature of Windows updates, this update contains the security payloads for the previous months. This list of CVEs reflects the security payloads since the last update.
 
 For more information about these vulnerabilities, click on the following links: