Update docs against 16123

Signed-off-by: wusongqing<wusongqing@huawei.com>

en/application-dev/reference/apis/Readme-EN.md

@@ -173,6 +173,7 @@
   - [@ohos.promptAction (Prompt)](js-apis-promptAction.md)
   - [@ohos.router (Page Routing)](js-apis-router.md)
   - [@ohos.measure (Text Measurement)](js-apis-measure.md)
+  - [@ohos.uiAppearance (UI Appearance)](js-apis-uiappearance.md)
 
 - Graphics 
   - [@ohos.animation.windowAnimationManager (Window Animation Management)](js-apis-windowAnimationManager.md)
@@ -238,7 +239,7 @@
   - [@ohos.file.fileUri (File URI)](js-apis-file-fileUri.md)
   - [@ohos.file.fs (File Management)](js-apis-file-fs.md)
   - [@ohos.file.hash (File Hash Processing)](js-apis-file-hash.md)
-  - [@ohos.file.picker (File Picker)](js-apis-file-picker.md)
+  - [@ohos.file.picker (Picker)](js-apis-file-picker.md)
   - [@ohos.file.securityLabel (Data Label)](js-apis-file-securityLabel.md)
   - [@ohos.file.statvfs (File System Space Statistics)](js-apis-file-statvfs.md)
   - [@ohos.file.storageStatistics (Application Storage Statistics)](js-apis-file-storage-statistics.md)
@@ -266,6 +267,7 @@
   - [@ohos.request (Upload and Download)](js-apis-request.md)
 
 - Connectivity
+  - [@ohos.bluetooth (Bluetooth) (To Be Deprecated Soon)](js-apis-bluetooth.md)
   - [@ohos.bluetoothManager (Bluetooth)(js-apis-bluetoothManager.md)
   - [@ohos.connectedTag (Active Tags)](js-apis-connectedTag.md)
   - [@ohos.nfc.cardEmulation (Standard NFC Card Emulation)](js-apis-cardEmulation.md)
@@ -340,7 +342,7 @@
   - [@ohos.systemParameterEnhance (System Parameter)](js-apis-system-parameterEnhance.md)
   - [@ohos.thermal (Thermal Management)](js-apis-thermal.md)
   - [@ohos.update (Update)](js-apis-update.md)
-  - [@ohos.usbManager (USB Management)](js-apis-usbManager.md)
+  - [@ohos.usbManager (USB Manager)](js-apis-usbManager.md)
   - [@ohos.vibrator (Vibrator)](js-apis-vibrator.md)
 
 - Account Management
@@ -390,7 +392,6 @@
 
 - APIs No Longer Maintained
   - [@ohos.backgroundTaskManager (Background Task Management)](js-apis-backgroundTaskManager.md)
-  - [@ohos.bluetooth (Bluetooth)](js-apis-bluetooth.md)
   - [@ohos.bundle (Bundle)](js-apis-Bundle.md)
   - [@ohos.bundle.innerBundleManager (innerBundleManager)](js-apis-Bundle-InnerBundleManager.md)
   - [@ohos.bundleState (Device Usage Statistics)](js-apis-deviceUsageStatistics.md)

en/application-dev/reference/apis/js-apis-uiappearance.md

+# UI Appearance
+
+The **uiAppearance** module provides basic capabilities for managing the system appearance. It allows for color mode configuration currently, and will introduce more features over time.
+
+> **NOTE**
+>
+> The APIs of this module are supported since API version 9. Updates will be marked with a superscript to indicate their earliest API version.
+>
+> The APIs provided by this module are system APIs.
+
+
+## Modules to Import
+
+```ts
+import uiAppearance from '@ohos.uiAppearance'
+```
+
+
+## DarkMode
+
+Enumerates the color modes.
+
+
+**System capability**: SystemCapability.ArkUI.UiAppearance
+
+| Name| Value| Description|
+| -- | -- | -- |
+| ALWAYS_DARK | 0 | The system is always in dark mode. |
+| ALWAYS_LIGHT | 1 | The system is always in light mode.|
+
+
+## uiAppearance.setDarkMode
+
+setDarkMode(mode: DarkMode, callback: AsyncCallback\<void>): void
+
+Sets the system color mode. This API uses an asynchronous callback to return the result.
+
+**Permission required**: ohos.permission.UPDATE_CONFIGURATION
+
+**System capability**: SystemCapability.ArkUI.UiAppearance
+
+**Parameters**
+| Name| Type| Mandatory| Description|
+| -- | -- | -- | -- |
+| mode | [DarkMode](#darkmode) | Yes| Color mode to set.|
+| callback | AsyncCallback\<void>| Yes| Callback used to return the result.|
+
+**Example**
+  ```ts
+uiAppearance.setDarkMode(uiAppearance.DarkMode.ALWAYS_DARK, (err) => {
+  console.info(`${err}`);
+})
+  ```
+
+
+## uiAppearance.setDarkMode
+
+setDarkMode(mode: DarkMode): Promise\<void>;
+
+Sets the system color mode. This API uses a promise to return the result.
+
+**Permission required**: ohos.permission.UPDATE_CONFIGURATION
+
+**System capability**: SystemCapability.ArkUI.UiAppearance
+
+**Parameters**
+| Name| Type| Mandatory| Description|
+| -- | -- | -- | -- |
+| mode | [DarkMode](#darkmode) | Yes| Color mode to set.|
+
+**Return value**
+
+| Type  | Description                          |
+| ------ | ------------------------------ |
+| Promise\<void> | Promise that returns no value.|
+
+**Example**
+  ```ts
+uiAppearance.setDarkMode(uiAppearance.DarkMode.ALWAYS_DARK).then(() => {
+    console.log('Set dark-mode successfully.');
+}).catch((err) => {
+    console.log(`Set dark-mode failed, ${err}`);
+});
+  ```
+
+
+## uiAppearance.getDarkMode
+
+getDarkMode(): DarkMode;
+
+Obtains the system color mode.
+
+**Permission required**: ohos.permission.UPDATE_CONFIGURATION
+
+**System capability**: SystemCapability.ArkUI.UiAppearance
+
+**Return value**
+| Type| Description|
+| -- | -- |
+|[DarkMode](#darkmode) | Color mode obtained.|
+
+**Example**
+  ```ts
+let darkMode = uiAppearance.getDarkMode();
+console.log(`Get dark-mode ${darkMode}`);
+  ```