add description for day.yml

Signed-off-by: 李少辉 <lish@csdn.net>

2020/11/10/day.yml

 # 日期时间戳标志
 timestamp: 20201110
 items:
+# 数组需要根据 start point 排序
   - start_point: '20:00'
     end_point: '20:30'
     title: 'apache live'
     # 有namespace path 的表示需要链接站内资源
     namespace_path: 'lshemail'
     description: 'description for apache live'
+    # 可以根据 live link 进行查重、删除、更新
     live_link: 'https://www.baidu.com'
     supports:
     - url: 'https://codechina.csdn.net/codechina/operation-work/uploads/700cd15fa181e0582638135e4c1954b3/banner.jpg'