修改数字营销跳转链接

pages/practice/laboratory/marketing.vue

 <template>
   <div class="main_content">
     <div class="content_banner">
-      <a href="https://saas-lab.ezijing.com/" target="_blank">
+      <a href="https://digitalmarketinglab.ezijing.com/login" target="_blank">
         <img src="https://webapp-pub.ezijing.com/www/pc/practice/marketing/banner.png" class="banner" />
       </a>
       <!-- <div class="banner_btn">点击登录>></div> -->