fix typo

Author: maraoz

lib/Sync.js

@@ -274,7 +274,7 @@ function spec() {
 
     this.db.on('error', function(err) {
         console.log('connection error:' + err);
-        moogose.disconnect();
+        mongoose.disconnect();
     });
 
     this.db.on('disconnect', function(err) {