Fix an error in "local mock" chapter.
diff --git a/dubbo-user-book-en/demos/local-mock.md b/dubbo-user-book-en/demos/local-mock.md
index 15b2cce..28ab66b 100644
--- a/dubbo-user-book-en/demos/local-mock.md
+++ b/dubbo-user-book-en/demos/local-mock.md
@@ -5,13 +5,13 @@
Configured in the spring configuration file as follows:
```xml
-<dubbo:service interface="com.foo.BarService" mock="true" />
+<dubbo:reference interface="com.foo.BarService" mock="true" />
```
or
```xml
-<dubbo:service interface="com.foo.BarService" mock="com.foo.BarServiceMock" />
+<dubbo:reference interface="com.foo.BarService" mock="com.foo.BarServiceMock" />
```
Mock implementation in the project [^2]：
@@ -40,7 +40,7 @@
Consider changing to Mock implementation and return null in Mock implementation. If you just want to simply ignore the exception, `2.0.11` version or later version is available:
```xml
-<dubbo:service interface="com.foo.BarService" mock="return null" />
+<dubbo:reference interface="com.foo.BarService" mock="return null" />
```
[^1]: Mock is a subset of the Stub. If you use Stub, you may need to rely on the RpcException class. If you use Mock, you do not need to rely on RpcException, when throwing RpcException, it will callback Mock implementation class.
diff --git a/dubbo-user-book/demos/local-mock.md b/dubbo-user-book/demos/local-mock.md
index 128b40c..1518b7a 100644
--- a/dubbo-user-book/demos/local-mock.md
+++ b/dubbo-user-book/demos/local-mock.md
@@ -5,13 +5,13 @@
在 spring 配置文件中按以下方式配置：
```xml
-<dubbo:service interface="com.foo.BarService" mock="true" />
+<dubbo:reference interface="com.foo.BarService" mock="true" />
```
或
```xml
-<dubbo:service interface="com.foo.BarService" mock="com.foo.BarServiceMock" />
+<dubbo:reference interface="com.foo.BarService" mock="com.foo.BarServiceMock" />
```
在工程中提供 Mock 实现 [^2]：
@@ -40,7 +40,7 @@
请考虑改为 Mock 实现，并在 Mock 实现中 return null。如果只是想简单的忽略异常，在 `2.0.11` 以上版本可用：
```xml
-<dubbo:service interface="com.foo.BarService" mock="return null" />
+<dubbo:reference interface="com.foo.BarService" mock="return null" />
```
[^1]: Mock 是 Stub 的一个子集，便于服务提供方在客户端执行容错逻辑，因经常需要在出现 RpcException (比如网络失败，超时等)时进行容错，而在出现业务异常(比如登录用户名密码错误)时不需要容错，如果用 Stub，可能就需要捕获并依赖 RpcException 类，而用 Mock 就可以不依赖 RpcException，因为它的约定就是只有出现 RpcException 时才执行。
