fix: relationships links should be before data

Author: danivek

lib/JSONAPISerializer.js

@@ -101,8 +101,8 @@ module.exports = class JSONAPISerializer {
 
     _.forOwn(options.relationships, (rOptions, relationship) => {
       const serializeRelationship = {
-        data: this.serializeRelationship(rOptions.type, data[relationship], this.schemas[options.relationships[relationship].type].default, included),
         links: this.getLinks(data, rOptions.links),
+        data: this.serializeRelationship(rOptions.type, data[relationship], this.schemas[options.relationships[relationship].type].default, included),
       };
       _.set(serializedRelationships, relationship, serializeRelationship);
     });