update doc

python/examples/xpu/fit_a_line_xpu/README.md

@@ -13,7 +13,10 @@ sh get_data.sh
 ## RPC service
 
 ### Start server
-
+``` shell
+python test_server.py uci_housing_model/
+```
+You can alse use the following code to start the RPC service 
 ```shell
 python -m paddle_serving_server.serve --model uci_housing_model --thread 10 --port 9393 --use_lite --use_xpu --ir_optim
 ```

python/examples/xpu/resnet_v2_50_xpu/README.md

@@ -18,5 +18,5 @@ python -m paddle_serving_server.serve --model resnet_v2_50_imagenet_model --port
 ### Client Prediction
 
 ```
-python resnet50_v2_client.py
+python resnet50_client.py
 ```

python/examples/xpu/resnet_v2_50_xpu/README_CN.md

@@ -18,5 +18,5 @@ python -m paddle_serving_server.serve --model resnet_v2_50_imagenet_model --port
 ### 客户端预测
 
 ```
-python resnet50_v2_client.py
+python resnet50_client.py
 ```