Fix SHOW CONSTRAINTS table (#1075)

Author: JPryce-Aklundh

modules/ROOT/pages/constraints/managing-constraints.adoc

@@ -1543,6 +1543,8 @@ SHOW CONSTRAINTS YIELD *
 [source, queryresult]
 ----
 +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| id | name                          | type                              | entityType     | labelsOrTypes  | properties                         | ownedIndex                    | propertyType                     | options                                       | createStatement                                                                                                                        |
++-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | 21 | "actor_fullname"              | "NODE_KEY"                        | "NODE"         | ["Actor"]      | ["firstname", "surname"]           | "actor_fullname"              | NULL                             | {indexConfig: {}, indexProvider: "range-1.0"} | "CREATE CONSTRAINT `actor_fullname` FOR (n:`Actor`) REQUIRE (n.`firstname`, n.`surname`) IS NODE KEY"                                  |
 | 10 | "author_name"                 | "NODE_PROPERTY_EXISTENCE"         | "NODE"         | ["Author"]     | ["name"]                           | NULL                          | NULL                             | NULL                                          | "CREATE CONSTRAINT `author_name` FOR (n:`Author`) REQUIRE (n.`name`) IS NOT NULL"                                                      |
 | 3  | "book_isbn"                   | "UNIQUENESS"                      | "NODE"         | ["Book"]       | ["isbn"]                           | "book_isbn"                   | NULL                             | {indexConfig: {}, indexProvider: "range-1.0"} | "CREATE CONSTRAINT `book_isbn` FOR (n:`Book`) REQUIRE (n.`isbn`) IS UNIQUE"                                                            |