Update generation-2.md

Author: mimckitt

articles/virtual-machines/linux/generation-2.md

@@ -48,7 +48,7 @@ Generation 2 VMs support the following Marketplace images:
 * SUSE Linux Enterprise Server 12 SP4
 * Ubuntu Server 16.04, 18.04, 19.04, 19.10 
 * RHEL 8.1, 8.0, 7.7, 7.6, 7.5, 7.4, 7.0
-* Cent OS 8.0, 7.7, 7.6, 7.5, 7.4
+* Cent OS 8.1, 8.0, 7.7, 7.6, 7.5, 7.4
 * Oracle Linux 7.7, 7.7-CI
 
 ## On-premises vs. Azure generation 2 VMs