Add valid options of the queryLang field

Author: NataliaIvakina

modules/ROOT/pages/monitoring/logging.adoc

@@ -1311,7 +1311,7 @@ For `event=start`, the value is `00000000`.
 | Whether the query string matched a cached execution plan.
 
 | queryLang label:new[Introduced in 2025.01]
-| Cypher version.
+| Cypher version: valid options are `CYPHER 5` or `CYPHER 25`.
 
 |===