Update replication-manager-for-pxc.md (#148)

* Update replication-manager-for-pxc.md

* Update replication-manager-for-pxc.md

docs/replication-manager/replication-manager-for-pxc.md

@@ -1,6 +1,6 @@
 # Replication manager for Percona XtraDB Cluster
 
-{% include './snippets/tech-preview/_tech-preview-feature.md'%}
+The feature is a [tech preview](../glossary.md#tech-preview). Before using this feature in production, we recommend that you test restoring production from physical backups in your environment, and also use the alternative backup method for redundancy.
 
 The replication manager script helps manage [multi-source replication](../glossary.md#multi-source-replication) between multiple Percona XtraDB Cluster clusters. This tool has a failover mechanism and can automatically perform a failover due to source or replica node failures, service degradation, or maintenance requirements.