added ubuntu 22.04 relnote

Author: rpsqrd

articles/azure-arc/servers/agent-release-notes.md

@@ -22,6 +22,7 @@ This page is updated monthly, so revisit it regularly. If you're looking for ite
 
 - The default login flow for Windows computers now loads the local web browser to authenticate with Azure Active Directory instead of providing a device code. You can use the `--use-device-code` flag to return to the old behavior or [provide service principal credentials](onboard-service-principal.md) for a non-interactive authentication experience.
 - If the resource group provided to `azcmagent connect` does not exist, the agent will try to create it and continue connecting the server to Azure.
+- Added support for Ubuntu 22.04
 
 ### Fixed
 

articles/azure-arc/servers/prerequisites.md

@@ -1,7 +1,7 @@
 ---
 title: Connected Machine agent prerequisites
 description: Learn about the prerequisites for installing the Connected Machine agent for Azure Arc-enabled servers.
-ms.date: 07/05/2022
+ms.date: 09/09/2022
 ms.topic: conceptual 
 ---
 
@@ -28,7 +28,7 @@ The following versions of the Windows and Linux operating system are officially
   * Azure Editions are supported when running as a virtual machine on Azure Stack HCI
 * Windows IoT Enterprise
 * Azure Stack HCI
-* Ubuntu 16.04, 18.04, and 20.04 LTS
+* Ubuntu 16.04, 18.04, 20.04, and 22.04 LTS
 * Debian 10
 * CentOS Linux 7 and 8
 * SUSE Linux Enterprise Server (SLES) 12 and 15