Add doc (14044)

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>

en/release-notes/changelogs/OpenHarmony_4.0.2.3/changelogs-ans.md

+# ANS Subsystem Changelog
+
+## cl.notificationManager.1 API Renaming
+
+Renamed certain APIs to meet the naming conventions.
+
+**Change Impact**
+
+The underlying layer still supports the functions of the original APIs, and therefore these APIs can be called in OpenHarmony 4.0.2.3.
+
+**Key API/Component Changes**
+
+| Bundle Name           | Original API                                                      | New API                                                      |
+| --------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
+| ohos.notificationManager.d.ts | **function** supportDoNotDisturbMode(callback: AsyncCallback\<boolean>): **void**; | **function** isSupportDoNotDisturbMode(callback: AsyncCallback\<boolean>): **void**; |
+| ohos.notificationManager.d.ts | **function** supportDoNotDisturbMode(): Promise\<boolean>; | **function** isSupportDoNotDisturbMode(): Promise\<boolean>; |
+
+**Adaptation Guide**
+
+Call the new API **isSupportDoNotDisturbMode**.