corrected applies to flex server

Author: techieari

articles/postgresql/single-server/partners-migration-postgresql.md

@@ -11,7 +11,7 @@ ms.date: 06/24/2022
 
 # Azure Database for PostgreSQL migration partners
 
-[!INCLUDE [applies-to-postgresql-single-server](../includes/applies-to-postgresql-single-server.md)]
+[!INCLUDE [applies-to-postgresql-single-server](../includes/applies-to-postgresql-single-flexible-server.md)]
 
 [!INCLUDE [azure-database-for-postgresql-single-server-deprecation](../includes/azure-database-for-postgresql-single-server-deprecation.md)]