update docs against 6175

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

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

 # MissionSnapshot
 
+The **MissionSnapshot** module provides the mission snapshot information of an ability.
+
 > **NOTE**
->
+> 
 > The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+> The APIs of this module are system APIs and cannot be called by third-party applications.
 
-Provides the snapshot of a mission.
+## Usage
 
-## Modules to Import
+The mission snapshot information can be obtained by using **getMissionSnapShot** in **missionManager**.
 
-```
-import missionManager from '@ohos.application.missionManager'
+```js
 import ElementName from '@ohos.bundle';
 import image from '@ohos.multimedia.image';
-```
+import missionManager from '@ohos.application.missionManager'
+
+  missionManager.getMissionInfos("", 10, (error, missions) => {
+    console.log("getMissionInfos is called, error.code = " + error.code);
+    console.log("size = " + missions.length);
+    console.log("missions = " + JSON.stringify(missions));
+    var id = missions[0].missionId;
 
+    missionManager.getMissionSnapShot("", id, (error, snapshot) => {
+  	console.log("getMissionSnapShot is called, error.code = " + error.code);
+  	console.log("bundleName = " + snapshot.ability.bundleName);
+  })
+  })
+```
 ## MissionSnapshot
 
 Describes the mission snapshot.
 
+**System capability**: SystemCapability.Ability.AbilityRuntime.Mission
+
 | Name| Type| Readable| Writable| Description|
 | -------- | -------- | -------- | -------- | -------- |
 | ability | ElementName | Yes| Yes| Information that matches an ability.|

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

@@ -5,12 +5,6 @@
 > The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version. 
 > The APIs of this module can be used only in the FA model.
 
-## Modules to Import
-
-```js
-import featureAbility from "@ohos.ability.featureAbility";
-```
-
 ## Usage
 
 Import the following modules based on the actual situation before using the current module:
@@ -573,7 +567,7 @@ Inserts multiple data records into the database. This API uses an asynchronous c
 | Name        | Type                   | Mandatory| Description                            |
 | ------------ | ----------------------- | ---- | -------------------------------- |
 | uri          | string                  | Yes  | URI of the data to insert.        |
-| valuesBucket | Array\<rdb.ValuesBucket> | Yes  | Data records to insert.          |
+| valuesBucket | Array<rdb.ValuesBucket> | Yes  | Data records to insert.          |
 | callback     | AsyncCallback\<number>  | Yes  | Callback used to return the number of inserted data records.|
 
 **Example**