fix: unlocalized error if language key has args

Author: julianlam

lib/errorHandler.js

@@ -1,7 +1,7 @@
 'use strict';
 
 var translator = require.main.require('./src/translator');
-var isLanguageKey = /^\[\[[\w.\-_:]+]]$/;
+var isLanguageKey = /^\[\[[\w.,\s\-_:]+]]$/;
 
 var ErrorHandler = {};