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

Signed-off-by: Nge-yafang <geyafang@huawei.com>
Signed-off-by: N葛亚芳 <geyafang@huawei.com>

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

@@ -1541,7 +1541,7 @@ remoteQuery(device: string, table: string, predicates: RdbPredicates, columns: A
 **示例：**
 
 ```js
-let predicates = new rdb.RdbPredicates('EPLOYEE')
+let predicates = new data_rdb.RdbPredicates('EPLOYEE')
 predicates.greaterThan("id", 0)
 rdbStore.remoteQuery("deviceId", "EPLOYEE", predicates, function(err, resultSet){
     if (err) {
@@ -1579,7 +1579,7 @@ remoteQuery(device: string, table: string, predicates: RdbPredicates, columns: A
 **示例：**
 
 ```js
-let predicates = new rdb.RdbPredicates('EPLOYEE')
+let predicates = new data_rdb.RdbPredicates('EPLOYEE')
 predicates.greaterThan("id", 0)
 let promise = rdbStore.remoteQuery("deviceId", "EMPLOYEE", predicates)
 promise.then((resultSet) => {