Merge pull request #208126 from SnehaSudhirG/16Aug-UMCV2-SupportMatrix

Added the support info as a note

Author: prmerger-automator[bot]

articles/update-center/support-matrix.md

@@ -67,6 +67,9 @@ United Kingdom | UK South
 
 The following table lists the supported operating systems for Azure VMs and Azure Arc-enabled servers. Before you enable update management center (preview), ensure that the target machines meet the operating system requirements.
 
+>[!NOTE]
+> For Azure VMs, we currently support a combination of Offer, Publisher, and SKU of the VM image. Ensure you match all three to confirm support.
+
 # [Azure VMs](#tab/azurevm-os)
 
 [Azure VMs](../virtual-machines/index.yml) are: