Update modules/ROOT/pages/errors/gql-errors.adoc

Co-authored-by: Louise Berglund <[email protected]>

Author: renetapopova

modules/ROOT/pages/errors/gql-errors.adoc

@@ -429,7 +429,7 @@ Status description:: error: syntax error or access rule violation - invalid use
 
 === 42I40
 
-Status description:: error: syntax error or access rule violation - invalid use of `UNION and UNION ALL`. `UNION` and `UNION ALL` cannot be combined.
+Status description:: error: syntax error or access rule violation - invalid use of `UNION` and `UNION ALL`. `UNION` and `UNION ALL` cannot be combined.
 
 === 42I47