DOC-1125 Add note about replication slot prefix (#200)

Author: asimms41

modules/components/pages/inputs/postgres_cdc.adoc

@@ -310,6 +310,10 @@ If the pipeline is restarted, another data snapshot is taken before data updates
 
 The name of the PostgreSQL logical replication slot to use. If not provided, a random name is generated unless you create a replication slot manually before starting replication.
 
+ifndef::env-cloud[]
+NOTE: Starting from version 4.48.1, Redpanda Connect no longer adds the prefix `rs_` to the names of replication slots it creates. To continue using an existing replication slot after upgrading, manually add the `rs_` prefix to the slot name.
+endif::[]
+
 *Type*: `string`
 
 *Default*: `""`