Add note on docs

Author: ebidel

google-maps-api.html

@@ -83,6 +83,9 @@
      * The localized language to load the Maps API with. For more information
      * see https://developers.google.com/maps/documentation/javascript/basics#Language
      *
+     * Note: the Maps API defaults to the preffered language setting of the browser.
+     * Use this parameter to override that behavior. 
+     *
      * @attribute language
      * @type string
      * @default null