Resolved cirular reference

schema/definitions/contentStructure.json

@@ -102,10 +102,10 @@
   },
   "definitions": {
     "hash": {
-      "$ref": "#/definitions/hash"
+      "$ref": "./hash.json"
     },
     "signature": {
-      "$ref": "#/definitions/signature"
+      "$ref": "./signature.json"
     }
-  },
+  }
 }