Update content/operate/rs/databases/active-active/develop/app-failover-active-active.md

Co-authored-by: Rachel Elledge <[email protected]>

Author: mich-elle-luna

content/operate/rs/databases/active-active/develop/app-failover-active-active.md

@@ -129,7 +129,7 @@ The most reliable way to detect replication failures is using Redis pub/sub.
 **Why pub/sub works**: Pub/sub messages are delivered as replicated effects, making them a reliable indicator of active replication links. Unlike dataset changes, pub/sub doesn't make assumptions about your data structure.
 {{< /tip >}}
 
-## Handling sharded databases
+## Handle sharded databases
 
 If your Active-Active database uses sharding, you need to monitor each shard individually: