Add a comment about future removal

Author: NataliaIvakina

modules/ROOT/pages/changes-deprecations-removals.adoc

@@ -495,7 +495,7 @@ Replaced by: xref:procedures.adoc#procedure_dbms_cluster_secondaryreplicationdis
 | Comment
 
 |xref:monitoring/metrics/reference.adoc#raft-metrics[`<prefix>.cluster.raft.tx_retries`] label:deprecated[Deprecated in 2025.02]
-|
+|The metric will be removed in a future release.
 
 2+| xref:monitoring/metrics/reference.adoc#db-data-metrics[Database data metrics] label:deprecated[Deprecated in 5.15]
 |`<prefix>.ids_in_use.relationship_type`|