Merge pull request #149 from neo4j/fix-docs-for-valid-locations-for-the-query-directive

update for valid schema locations for the @query directive

Author: rsill-neo4j

modules/ROOT/pages/schema-configuration/type-configuration.adoc

@@ -46,7 +46,7 @@ This directive is used to limit the availability of query operations in the libr
 
 [source, graphql, indent=0]
 ----
-directive @query(read: Boolean! = true, aggregate: Boolean! = false) on OBJECT | SCHEMA
+directive @query(read: Boolean! = true, aggregate: Boolean! = false) on OBJECT | SCHEMA | INTERFACE | UNION
 ----
 
 === Usage