Changing duplicate ms.custom

Author: sandeepchadda

articles/energy-data-services/overview-ddms.md

@@ -6,8 +6,7 @@ ms.author: marielherzog #Required; microsoft alias of author; optional team alia
 ms.topic: overview #Required; leave this attribute/value as-is.
 ms.date: 09/01/2022
 ms.service: energy-data-services
-ms.custom: template-overview
-ms.custom: references_regions 
+ms.custom: template-overview, references_regions  
 ---
 
 # Domain data management services (DDMS)