Fixes a typo in the demo sample code.
Fixes a typo in the demo sample code.

--HG--
branch : bootstrap2

66ru/yii-bootstrap,theblacksmith/yii-bootstrap,motin/yii-bootstrap,motin/yii-bootstrap,66ru/yii-bootstrap,theblacksmith/yii-bootstrap,theblacksmith/yii-bootstrap,66ru/yii-bootstrap,motin/yii-bootstrap,theblacksmith/yii-bootstrap