fix jsdoc

Author: bajtos

lib/persisted-model.js

@@ -1943,18 +1943,14 @@ module.exports = function(registry) {
    *     return filter;
    *   };
    * };
+   * ```
    *
    * @param {Number} since Return only changes since this checkpoint.
    * @param {Object} modelFilter Filter describing which model instances to
    * include in the list of changes.
    * @returns {Object} The filter object to pass to `Change.find()`. Default:
-   * ```js
-   * {
-   *   where: {
-   *     checkpoint: {gte: since},
-   *     modelName: this.modelName
-   *   },
-   * }
+   * ```
+   * {where: {checkpoint: {gte: since}, modelName: this.modelName}}
    * ```
    */
   PersistedModel.createChangeFilter = function(since, modelFilter) {