添加meta备注，使得页面链接发送到QQ后可以显示我们想要的内容卡片

html/download/html/download.html

@@ -4,6 +4,8 @@
		<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<meta charset="utf-8">
		<title>城市i健康医生端下载页</title>
		<meta itemprop="name" content="城市i健康医生端下载页"/>
        <meta name="description" itemprop="description" content="智能医疗，健康上线！" />
		<link rel="stylesheet" type="text/css" href="../../../css/cross.css" />
		<link rel="stylesheet" type="text/css" href="../../../iconfont/iconfont.css" />
		<link rel="stylesheet" type="text/css" href="../css/download.css" />