Update docs/multi_database.rst

Co-authored-by: andy-stark-redis <[email protected]>

Author: vladvildanov

docs/multi_database.rst

@@ -419,7 +419,7 @@ Custom failover callbacks
 You may want to activate custom actions when failover happens. For example, you may want to collect some metrics,
 logs or externally persist a connection state.
 
-You can register your own event listener for `ActiveDatabaseChanged` event that was emitted when failover happened, via
+You can register your own event listener for the `ActiveDatabaseChanged` event (which is emitted when a failover happens) using
 the `EventDispatcher`.
 
 .. code-block:: python