我引用了在线的iconfont链接，按照文档不是要配置小程序的服务器域名,"at.alicdn.com",但是不用配置也能访问到

@font-face {

  font-family: "icon"; /* Project id 1708193 */

  src: url('//at.alicdn.com/t/font_1708193_cfzuyuy4fq.woff2?t=1852210096') format('woff2'),

       url('//at.alicdn.com/t/font_1708193_cfzuyuy4fq.woff?t=1852210096') format('woff'),

       url('//at.alicdn.com/t/font_1708193_cfzuyuy4fq.ttf?t=1852210096') format('truetype');

}