Make sure we get Jackie Chan's name right

Author: yyx990803

examples/grid/grid.js

@@ -34,7 +34,7 @@ var demo = new Vue({
     gridData: [
       { name: 'Chuck Norris', power: Infinity },
       { name: 'Bruce Lee', power: 9000 },
-      { name: 'Jacky Chang', power: 7000 },
+      { name: 'Jackie Chan', power: 7000 },
       { name: 'Jet Li', power: 8000 }
     ]
   }