Update azure-app-configuration-availability-zones.md

Adding Poland Central to regions with availability zones.

Author: albertofori

includes/azure-app-configuration-availability-zones.md

@@ -18,4 +18,4 @@ Following are regions where App Configuration has enabled availability zone supp
 | East US 2        | UK South             |               |        | Southeast Asia |
 | South Central US | West Europe          |               |        | East Asia      |
 | West US 2        | Sweden Central       |               |        | China North 3  |
-| West US 3        |                      |               |        |                |
+| West US 3        | Poland Central       |               |        |                |