add note about database name in query log

Author: LinneaAndersson

modules/ROOT/pages/monitoring/logging.adoc

@@ -1221,7 +1221,7 @@ Included when xref:configuration/configuration-settings.adoc#config_db.logs.quer
 | Connection details.
 
 | database
-| The database name on which the query is run.
+| The database name on which the query is run. This field will be `<none>` if it is not possible to parse and route the query to the correct database.
 
 | executingUser
 | The name of the user executing the query.