设置这个<link rel="canonical" href="{$eyou.field.pageurl}">所有的链接都默认带了www
例如：<link rel="canonical" href="" _src="https://www.demo.yiyocms.com/">">https://www.demo.yiyocms.com/">
我想要的是<link rel="canonical" href="" style="font-family: Roboto, "PingFang SC", "Lantinghei SC", "Microsoft Yahei", "Hiragino Sans GB", "Microsoft Sans Serif", "WenQuanYi Micro Hei", sans-serif; font-size: 14px; text-wrap: wrap;">https://demo.yiyocms.com/">