!21296 add calendarManager

Merge pull request !21296 from zcl/master

zh-cn/application-dev/reference/apis/Readme-CN.md

@@ -390,6 +390,7 @@
   - [@ohos.batteryInfo (电量信息)](js-apis-battery-info.md)
   - [@ohos.batteryStatistics (耗电统计)](js-apis-batteryStatistics.md)
   - [@ohos.brightness (屏幕亮度)](js-apis-brightness.md)
+  - [@ohos.calendarManager (日程管理)](js-apis-calendarManager.md)
   - [@ohos.charger (充电类型)](js-apis-charger.md)
   - [@ohos.cooperate (键鼠穿越)](js-apis-devicestatus-cooperate.md)
   - [@ohos.deviceAttest (设备证明)](js-apis-deviceAttest.md)