Fix test (string + failing setup)

modules/ROOT/pages/values-and-types/type-predicate.adoc

@@ -133,9 +133,10 @@ A graph containing the following nodes is used for the example below:
 ////
 [source, cypher, role=test-setup]
 ----
-CREATE (:Person {name: 'Alice', age:18}),
-(:Person {name:'Bob', age:'20'}),
-(:Person {name:'Charlie', age:21}),
+CREATE
+  (:Person {name: 'Alice', age:18}),
+  (:Person {name:'Bob', age:'20'}),
+  (:Person {name:'Charlie', age:21})
 ----
 ////
 
@@ -153,7 +154,7 @@ RETURN n.name AS name, n.age AS age
 [role="queryresult",options="header,footer",cols="2*<m"]
 |===
 | name | age
-| Charlie | 21
+| 'Charlie' | 21
 2+d|Rows: 1
 |===