Update overview.md

Updated US Gov Arizona

Author: kabharati

articles/postgresql/flexible-server/overview.md

@@ -114,7 +114,7 @@ One advantage of running your workload in Azure is global reach. The flexible se
 | Switzerland North | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | Switzerland West | :heavy_check_mark: | :x: | :heavy_check_mark: | :heavy_check_mark: |
 | UAE North | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :x: |
-| US Gov Arizona | :heavy_check_mark: | :x: | :heavy_check_mark: | :x: |
+| US Gov Arizona | :x: $$ | :x: | :heavy_check_mark: | :x: |
 | US Gov Virginia | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :x: |
 | UK South | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
 | UK West | :heavy_check_mark: | :x: | :heavy_check_mark: | :heavy_check_mark: |