Merge pull request #4814 from EnterpriseDB/docs/biganimal/commit-scopes

BigAnimal: commit scopes recommendation

product_docs/docs/biganimal/release/overview/02_high_availability.mdx

@@ -53,7 +53,7 @@ Distributed high-availability clusters are powered by [EDB Postgres Distributed]
 
 Distributed high-availability clusters support both EDB Postgres Advanced Server and EDB Postgres Extended Server database distributions. 
 
-Distributed high-availability clusters contain one or two data groups. Your data groups can contain either three data nodes or two data nodes and one witness node. One of these data nodes is the leader at any given time, while the rest are shadow nodes. 
+Distributed high-availability clusters contain one or two data groups. Your data groups can contain either three data nodes or two data nodes and one witness node. One of these data nodes is the leader at any given time, while the rest are shadow nodes. We don't recommend you use two data nodes and one witness node in production unless you use asynchronous [commit scopes](/pgd/latest/durability/commit-scopes/). 
 
 [PGD Proxy](/pgd/latest/routing/proxy) routes all application traffic to the leader node, which acts as the principal write target to reduce the potential for data conflicts. PGD Proxy leverages a distributed consensus model to determine availability of the data nodes in the cluster. On failure or unavailability of the leader, PGD Proxy elects a new leader and redirects application traffic. Together with the core capabilities of EDB Postgres Distributed, this mechanism of routing application traffic to the leader node enables fast failover and switchover.