Align the warning with COMPACTION_POLICY warning

Author: LiorKogan

content/commands/ts.createrule/index.md

@@ -133,7 +133,7 @@ aggregates results into time buckets.
 - Deleting `destKey` will cause the compaction rule to be deleted as well.
 
 {{% warning %}}
-On a clustered environment, you must use [hash tags]({{< relref "/operate/oss_and_stack/reference/cluster-spec" >}}#hash-tags) to force `sourceKey` and `destKey` to be stored in the same hash slot.
+On a clustered environment, you must use [hash tags]({{< relref "/operate/oss_and_stack/reference/cluster-spec" >}}#hash-tags) to force `sourceKey` and `destKey` to be stored in the same hash slot. If you don't, Redis may fail to compact the data without displaying any error messages.
 {{% /warning %}}
 
 </note>