Update 高级配置.md

chenanga · May 30, 2019 · faa7239 · faa7239
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@@ -54,6 +54,8 @@
 
 <img src="https://cdn.jun6.net/201812011433_568.png" width="650">
 
+> 注意, LeanCloud 最近更新了定时器校验规则, 需要将 Cron 表达式写为: `0 */20 7-23 * * ?` !!!
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 添加后要记得**点击启用**：
 
 ![](https://cdn.jun6.net/201812011434_118.png)