Fix CurveLocation#distance documentation

@see tag was pointing to an inherited method which is not compatible
with current jsdoc parser implementation.
Problem is resolved by making reference point to the parent class
owning the method.

src/path/CurveLocation.js

@@ -284,7 +284,7 @@ var CurveLocation = Base.extend(/** @lends CurveLocation# */{
      * @bean
      * @type Number
      * @see Curve#getNearestLocation(point)
-     * @see Path#getNearestLocation(point)
+     * @see PathItem#getNearestLocation(point)
      */
     getDistance: function() {
         return this._distance;