small fix

Author: JPryce-Aklundh

modules/ROOT/pages/expressions/temporal-operators.adoc

@@ -107,7 +107,7 @@ RETURN date("2011-01-31") + duration("P1M") AS truncatedDate
 
 When adding two `DURATION` values to a temporal instant value, the order in which the durations are applied affects the result.
 
-.Query
+.Add two `DURATION` values to a `DATE`
 [source, cypher]
 ----
 RETURN (date("2011-01-31") + duration("P1M")) + duration("P12M") AS date1,