add live link

lives/2020-12-09/day.yml

@@ -8,15 +8,18 @@ items:
     end_time: '01:00'
     title: '开幕表演：现场编码的原始作品'
     description: 'DJ Dave(aka Sarah Davis)'
+    live_link: ''
 #2 
   - start_time: '01:30'
     end_time: '01:45'
     title: '开幕致辞'
     description: 'Nat Friedman | CEO Github'
+    live_link: ''
 #3   
   - start_time: '01:45'
     end_time: '02:15'
     title: 'Github 如何帮助你尽早发现漏洞'
+    live_link: ''
 relations:
   - url: ''
     timestamp: '2020-12-10'