Fix typo syntax error.

Author: handrews

hyper-schema.json

@@ -1,6 +1,6 @@
 {
 	"$schema" : "http://json-schema.org/draft-03/hyper-schema#",
-	"extends" : {"$ref" : "http://json-schema.org/draft-03/schema#"}
+	"extends" : {"$ref" : "http://json-schema.org/draft-03/schema#"},
 	"id" : "http://json-schema.org/draft-03/hyper-schema#",
 
 	"properties" : {
@@ -57,4 +57,4 @@
 	],
 
 	"fragmentResolution" : "slash-delimited"
-}
+}