Update confidential-vm-overview.md

Added RHEL 9.3 image as supported for SNP

Author: linuxelf001

articles/confidential-computing/confidential-vm-overview.md

@@ -96,8 +96,8 @@ Confidential VMs support the following OS options:
 | 22.04 <span class="pill purple">LTS</span>        | 22H2 Pro <span class="pill red">ZH-CN</span>     | 2019 Server Core              |
 |                                                   | 22H2 Pro N                                       |                               |
 | **RHEL**                                          | 22H2 Enterprise                                  | 2022                          |
-| 9.2 <span class="pill purple">TECH PREVIEW</span> | 22H2 Enterprise N                                | 2022 Server Core              |
-|                                                   | 22H2 Enterprise Multi-session                    | 2022 Azure Edition            |
+| 9.2 <span class="pill purple">Tech Preview (SEV-SNP Only)</span> | 22H2 Enterprise N                                | 2022 Server Core              |
+| 9.3 (SEV-SNP Only)                                | 22H2 Enterprise Multi-session                    | 2022 Azure Edition            |
 |                                                   |                                                  | 2022 Azure Edition Core       |
 
 ### Regions