update picture, fix backslash

Author: rachel-msft

articles/postgresql/concepts-read-replicas.md

@@ -30,7 +30,7 @@ You can create a read replica in a different region from your master server. Cro
 
 You can have a master server in any [Azure Database for PostgreSQL region](https://azure.microsoft.com/global-infrastructure/services/?products=postgresql). A master server can have a replica in its paired region or the universal replica regions. The picture below shows which replica regions are available depending on your master region.
 
-[ ![Read replica regions](media\concepts-read-replica\read-replica-regions.png)](media\concepts-read-replica\read-replica-regions.png#lightbox)
+[ ![Read replica regions](media/concepts-read-replica/read-replica-regions.png)](media/concepts-read-replica/read-replica-regions.png#lightbox)
 
 ### Universal replica regions
 You can always create a read replica in any of the following regions, regardless of where your master server is located. These are the universal replica regions: