Clean up phrasing

product_docs/docs/pgd/5.6/nodes/subscriber_only/optimizing-so.mdx

@@ -26,7 +26,7 @@ For clusters using groups for their data nodes, subscriber-only groups can use a
 
 Each subscriber-only group uses that group leader to replicate changes to other subscriber-only nodes in its group. The group leader acts as a replication proxy for incoming changes.
 
-The write leader nodes in other non-subscriber-only groups replicate changes to the group leader of the subscriber-only group. Other nodes only replicate within their data groups, both within their own group and in other data groups.
+The write leader nodes in data groups replicate changes to the group leaders of the subscriber-only groups. Other nodes in the data groups only replicate with nodes in their data group and with data nodes in other data groups. They do not directly replicate their changes to the subscriber-only groups.
 
 ## Subscriber-only group leaders