fixed 88ca742b from https://gitee.com/ge-yafang/docs/pulls/16256

add 801 errcode description
Signed-off-by: Nwangxiyue <wangxiyue8@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-data-distributedobject.md

@@ -363,7 +363,12 @@ save(deviceId: string, callback: AsyncCallback<SaveSuccessResponse>): void
 
 ```ts
 g_object.setSessionId("123456");
-g_object.save("local", (result) => {
+g_object.save("local", (err, result) => {
+    if (err) {
+        console.info("save failed, error code = " + err.code);
+        console.info("save failed, error message: " + err.message);
+        return;
+    }
     console.info("save callback");
     console.info("save sessionId: " + result.sessionId);
     console.info("save version: " + result.version);
@@ -408,8 +413,9 @@ g_object.save("local").then((result) => {
     console.info("save sessionId " + result.sessionId);
     console.info("save version " + result.version);
     console.info("save deviceId " + result.deviceId);
-}, () => {
-    console.error("save failed");
+}).catch((err) => {
+    console.info("save failed, error code = " + err.code);
+    console.info("save failed, error message: " + err.message);
 });
 ```
 
@@ -435,14 +441,24 @@ revokeSave(callback: AsyncCallback<RevokeSaveSuccessResponse>): void
 ```js
 g_object.setSessionId("123456");
 // 持久化数据
-g_object.save("local", (result) => {
+g_object.save("local", (err, result) => {
+    if (err) {
+        console.info("save failed, error code = " + err.code);
+        console.info("save failed, error message: " + err.message);
+        return;
+    }
     console.info("save callback");
-    console.info("save sessionId " + result.sessionId);
-    console.info("save version " + result.version);
-    console.info("save deviceId " + result.deviceId);
+    console.info("save sessionId: " + result.sessionId);
+    console.info("save version: " + result.version);
+    console.info("save deviceId:  " + result.deviceId);
 });
 // 删除持久化保存的数据
-g_object.revokeSave((result) => {
+g_object.revokeSave((err, result) => {
+    if (err) {
+      console.info("revokeSave failed, error code = " + err.code);
+      console.info("revokeSave failed, error message: " + err.message);
+      return;
+    }
     console.info("revokeSave callback");
     console.info("revokeSave sessionId " + result.sessionId);
 });
@@ -475,15 +491,17 @@ g_object.save("local").then((result) => {
     console.info("save sessionId " + result.sessionId);
     console.info("save version " + result.version);
     console.info("save deviceId " + result.deviceId);
-}, () => {
-    console.error("save failed");
+}).catch((err) => {
+    console.info("save failed, error code = " + err.code);
+    console.info("save failed, error message: " + err.message);
 });
 // 删除持久化保存的数据
 g_object.revokeSave().then((result) => {
     console.info("revokeSave callback");
     console.info("sessionId" + result.sessionId);
-}, () => {
-    console.error("revokeSave failed");
+}).catch((err)=> {
+    console.info("revokeSave failed, error code = " + err.code);
+    console.info("revokeSave failed, error message = " + err.message);
 });
 ```