fix json syntax from bad rebase

package.json

@@ -30,6 +30,6 @@
     "devDependencies": {
         "pegjs": "~0.7.0",
         "grunt": "~0.4.0",
-        "grunt-contrib-jshint": "~0.3.0",
+        "grunt-contrib-jshint": "~0.3.0"
     }
 }