Validation: Add forgotten "object" and "array" in the "type" keyword

Author: awwright

jsonschema-validation.xml

@@ -553,7 +553,7 @@
                 </t>
                 <t>
                     String values MUST be one of the six primitive types
-                    ("number", "string", "boolean", "true", "false", or "null"),
+                    ("null", "boolean", "object", "array", "number", or "string"),
                     or "integer" which matches any number with a zero fractional part.
                 </t>
                 <t>