fixed 658299c5 from https://gitee.com/ge-yafang/docs/pulls/17548

update zh-cn/application-dev/database/data-sync-of-kv-store.md.
Signed-off-by: N葛亚芳 <geyafang@huawei.com>

zh-cn/application-dev/database/data-sync-of-kv-store.md

@@ -160,8 +160,9 @@
        encrypt: false,
        backup: false,
        autoSync: false,
+       // kvStoreType不填时，默认创建多设备协同数据库
        kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-       // 设备协同数据库：kvStoreType: distributedKVStore.KVStoreType.DEVICE_COLLABORATION,
+       // 多设备协同数据库：kvStoreType: distributedKVStore.KVStoreType.DEVICE_COLLABORATION,
        securityLevel: distributedKVStore.SecurityLevel.S1
      };
      kvManager.getKVStore('storeId', options, (err, kvStore) => {