fix java doc

java/README.md

@@ -7,8 +7,8 @@
 In order to facilitate users to use java for development, we provide the compiled Serving project to be placed in the java mirror. The way to get the mirror and enter the development environment is
 
 ```
-docker pull hub.baidubce.com/paddlepaddle/serving:0.4.0-java
-docker run --rm -dit --name java_serving hub.baidubce.com/paddlepaddle/serving:0.4.0-java
+docker pull hub.baidubce.com/paddlepaddle/serving:0.4.1-java
+docker run --rm -dit --name java_serving hub.baidubce.com/paddlepaddle/serving:0.4.1-java
 docker exec -it java_serving bash
 cd Serving/java
 ```

java/README_CN.md

@@ -7,8 +7,8 @@
 为了方便用户使用java进行开发，我们提供了编译好的Serving工程放置在java镜像当中，获取镜像并进入开发环境的方式是
 
 ```
-docker pull hub.baidubce.com/paddlepaddle/serving:0.4.0-java
-docker run --rm -dit --name java_serving hub.baidubce.com/paddlepaddle/serving:0.4.0-java
+docker pull hub.baidubce.com/paddlepaddle/serving:0.4.1-java
+docker run --rm -dit --name java_serving hub.baidubce.com/paddlepaddle/serving:0.4.1-java
 docker exec -it java_serving bash
 cd Serving/java
 ```