[demo-express] Update the footer of help modal for demo-express
[demo-express] Update the footer of help modal for demo-express

axinging/demo-express,zhuyongyong/demo-express,axinging/demo-express,wanghongjuan/demo-express,yunxliu/demo-express,haoxli/demo-express,chunywang/demo-express,chunywang/demo-express,zhuyongyong/demo-express,chunywang/demo-express,kangxu/demo-express,yunxliu/demo-express,wanghongjuan/demo-express,axinging/demo-express,kangxu/demo-express,zhuyongyong/demo-express,yunxliu/demo-express,kangxu/demo-express,zhuyongyong/demo-express,yunxliu/demo-express,haoxli/demo-express,wanghongjuan/demo-express,chunywang/demo-express,kangxu/demo-express,wanghongjuan/demo-express,haoxli/demo-express,haoxli/demo-express,axinging/demo-express