Update translation workflow，fix layout issue here

https://github.com/yii2-chinesization/yii2-zh-cn/edit/master/guide/README.md#%E4%B8%8D%E5%BA%94%E7%BF%BB%E8%AF%91%E7%9A%84%E5%AD%97%E7%AC%A6%E4%B8%B2