fix: jianshu can't get fulltext and pubDate (#3104)

lib/routes/jianshu/utils.js

@@ -8,11 +8,7 @@ async function load(link) {
     const $ = cheerio.load(response.data);
 
     // 解析日期
-    const date = new Date(
-        $('.publish-time')
-            .text()
-            .match(/\d{4}.\d{2}.\d{2} \d{2}:\d{2}/)
-    );
+    const date = new Date($('time').attr('datetime'));
     const timeZone = 8;
     const serverOffset = date.getTimezoneOffset() / 60;
     const pubDate = new Date(date.getTime() - 60 * 60 * 1000 * (timeZone + serverOffset)).toUTCString();
@@ -31,7 +27,7 @@ async function load(link) {
         `);
     });
     // 提取内容
-    const description = $('.show-content-free').html();
+    const description = $('article').html();
 
     return { description, pubDate };
 }