Apply suggestions from code review

Co-authored-by: Jens Pryce-Åklundh <[email protected]>

Author: rsill-neo4j

modules/ROOT/pages/queries/composed-queries/sequential-queries.adoc

@@ -187,7 +187,7 @@ RETURN product.name AS product,
 [[union-after-next]]
 === Using `UNION` after `NEXT`
 
-If a `UNION` query follows a `NEXT` the full table of intermediate results is passed into all arms of the `UNION` query.
+If a `UNION` query follows a `NEXT` the full table of intermediate results is passed into all branches of the `UNION` query.
 
 .`UNION` after `NEXT`
 // tag::sequential_queries_union[]