update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/application-dev/reference/apis/js-apis-distributed-data.md

@@ -212,7 +212,7 @@ Creates and obtains a KV store. This API uses a promise to return the result.
 
 | Type                                   | Description       |
 | -------------------------------------- | ------------------------ |
-| Promise<T>, <T extends [KVStore](#kvstore)> | Promise used to return the KV store instance created. |
+| Promise<T>, <T extends [KVStore](#kvstore)> | Promise used to return the KV store instance created.|
 
 **Example**
 
@@ -485,7 +485,7 @@ Obtains the IDs of all KV stores that are created by [getKVStore()](#getkvstore)
 
 | Type         | Description           |
 | ------------- | -------------- |
-| Promise<string[]>| Promise used to return the IDs of all created KV stores. |
+| Promise<string[]>| Promise used to return the IDs of all created KV stores.|
 
 **Example**
 
@@ -3754,7 +3754,7 @@ try {
 
 sync(deviceIds: string[], mode: SyncMode, delayMs?: number): void
 
-Synchronizes the KV store manually. For details about the synchronization modes of the distributed data service, see [Distributed Data Service Overview](../../database/database-mdds-overview.md).
+Synchronizes the KV store manually.
 > **NOTE**<br/>
 >
 > The value of **deviceIds** is obtained by [deviceManager.getTrustedDeviceListSync](js-apis-device-manager.md#gettrusteddevicelistsync). The APIs of the **deviceManager** module are system interfaces and available only to system applications.
@@ -3825,7 +3825,7 @@ Subscribes to data changes of the specified type.
 | -------- | --------------------------------------------------------- | ---- | ---------------------------------------------------- |
 | event    | string                                                    | Yes  | Event to subscribe to. The value is **dataChange**, which indicates a data change event.|
 | type     | [SubscribeType](#subscribetype)                           | Yes  | Type of data change.                                    |
-| listener | Callback&lt;[ChangeNotification](#changenotification)&gt; | Yes  | Callback invoked to return the result.                                          |
+| listener | Callback&lt;[ChangeNotification](#changenotification)&gt; | Yes  | Callback invoked to return the data changes.                              |
 
 **Example**
 
@@ -5175,7 +5175,7 @@ try {
 
 sync(deviceIds: string[], mode: SyncMode, delayMs?: number): void
 
-Synchronizes the KV store manually. For details about the synchronization modes of the distributed data service, see [Distributed Data Service Overview](../../database/database-mdds-overview.md).
+Synchronizes the KV store manually.
 
 > **NOTE**<br/>
 >
@@ -5247,7 +5247,7 @@ Subscribes to data changes of the specified type.
 | -------- | --------------------------------------------------------- | ---- | ---------------------------------------------------- |
 | event    | string                                                    | Yes  | Event to subscribe to. The value is **dataChange**, which indicates a data change event.|
 | type     | [SubscribeType](#subscribetype)                           | Yes  | Type of data change.                                    |
-| listener | Callback&lt;[ChangeNotification](#changenotification)&gt; | Yes  | Callback invoked to return the result.                                          |
+| listener | Callback&lt;[ChangeNotification](#changenotification)&gt; | Yes  | Callback invoked to return the data changes.                              |
 
 **Example**
 

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

 # @ohos.data.distributedKVStore (Distributed KV Store)
 
-The **distributedKVStore** module implements collaboration between databases for different devices that forms a Super Device. The APIs provided by this module can be used to save data to a distributed key-value (KV) store and perform operations, such as adding, deleting, modifying, querying, and synchronizing data in distributed KV stores.
+The **distributedKVStore** module implements collaboration between databases for different devices that forms a Super Device. You can use the APIs provided by this module to save application data to a distributed key-value (KV) store and perform operations, such as adding, deleting, modifying, querying, and synchronizing data in distributed KV stores.
 
 The **distributedKVStore** module provides the following functions:
 
 - [KVManager](#kvmanager): provides a **KVManager** instance to obtain KV store information.
-- [KVStoreResultSet](#kvstoreresultset): provides APIs for obtaining KV store result sets.
-- [Query](#query): provides APIs for setting predicates and querying data using predicates.
-- [SingleKVStore](#singlekvstore): provides APIs for querying data in single KV stores and synchronizing data. The single KV stores manage data without distinguishing devices.
-- [DeviceKVStore](#devicekvstore): provides APIs for querying in device KV stores and synchronizing data. This class inherits from [SingleKVStore](#singlekvstore). The device KV stores manage data by device.
+- [KVStoreResultSet](#kvstoreresultset): provides APIs for accessing the results obtained from a KV store.
+- [Query](#query): provides APIs for setting predicates for data query.
+- [SingleKVStore](#singlekvstore): provides APIs for querying and synchronizing data in single KV stores. The single KV stores manage data without distinguishing devices.
+- [DeviceKVStore](#devicekvstore): provides APIs for querying and synchronizing data in device KV stores. This class inherits from [SingleKVStore](#singlekvstore). The device KV stores manage data by device.
 
 > **NOTE**
 >
@@ -1832,7 +1832,7 @@ try {
 
 limit(total: number, offset: number): Query
 
-Creates a **Query** object to specify the number of results and where to start.
+Creates a **Query** object to specify the number of records of the query result and where to start.
 
 **System capability**: SystemCapability.DistributedDataManager.KVStore.Core
 
@@ -4484,7 +4484,7 @@ try {
 
 sync(deviceIds: string[], mode: SyncMode, delayMs?: number): void
 
-Synchronizes the KV store manually. For details about the synchronization modes of the distributed data service, see [Distributed Data Service Overview](../../database/database-mdds-overview.md).
+Synchronizes the KV store manually. For details about the synchronization modes of KV stores, see [Cross-Device Synchronization of KV Stores](../../database/data-sync-of-kv-store.md).
 > **NOTE**
 >
 > The value of **deviceIds** is obtained by [deviceManager.getTrustedDeviceListSync](js-apis-device-manager.md#gettrusteddevicelistsync). The APIs of the **deviceManager** module are system interfaces and available only to system applications.
@@ -4554,7 +4554,7 @@ deviceManager.createDeviceManager('bundleName', (err, value) => {
 
 sync(deviceIds: string[], query: Query, mode: SyncMode, delayMs?: number): void
 
-Synchronizes the KV store manually. This API returns the result synchronously. For details about the synchronization modes of the distributed data service, see [Distributed Data Service Overview](../../database/database-mdds-overview.md).
+Synchronizes the KV store manually. This API returns the result synchronously. For details about the synchronization modes of KV stores, see [Cross-Device Synchronization of KV Stores](../../database/data-sync-of-kv-store.md).
 > **NOTE**<br/>
 >
 > The value of **deviceIds** is obtained by [deviceManager.getTrustedDeviceListSync](js-apis-device-manager.md#gettrusteddevicelistsync). The APIs of the **deviceManager** module are system interfaces and available only to system applications.