fix doc

deploy/pdserving/README.md

@@ -30,38 +30,27 @@ The introduction and tutorial of Paddle Serving service deployment framework ref
 PaddleOCR operating environment and Paddle Serving operating environment are needed.
 
 1. Please prepare PaddleOCR operating environment reference [link](../../doc/doc_ch/installation.md).
-   Download the corresponding paddle whl package according to the environment, it is recommended to install version 2.0.1.
+   Download the corresponding paddlepaddle whl package according to the environment, it is recommended to install version 2.2.2.
 
 
 2. The steps of PaddleServing operating environment prepare are as follows:
 
-    Install serving which used to start the service
-    ```
-    pip3 install paddle-serving-server==0.6.1 # for CPU
-    pip3 install paddle-serving-server-gpu==0.6.1 # for GPU
-    # Other GPU environments need to confirm the environment and then choose to execute the following commands
-    pip3 install paddle-serving-server-gpu==0.6.1.post101 # GPU with CUDA10.1 + TensorRT6
-    pip3 install paddle-serving-server-gpu==0.6.1.post11 # GPU with CUDA11 + TensorRT7
-    ```
-
-3. Install the client to send requests to the service
-
-```bash
-# 安装serving，用于启动服务
-wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_server_gpu-0.7.0.post102-py3-none-any.whl
-pip3 install paddle_serving_server_gpu-0.7.0.post102-py3-none-any.whl
-# 如果是cuda10.1环境，可以使用下面的命令安装paddle-serving-server
-# wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_server_gpu-0.7.0.post101-py3-none-any.whl
-# pip3 install paddle_serving_server_gpu-0.7.0.post101-py3-none-any.whl
-
-# 安装client，用于向服务发送请求
-wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_client-0.7.0-cp37-none-any.whl
-pip3 install paddle_serving_client-0.7.0-cp37-none-any.whl
-
-# 安装serving-app
-wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_app-0.7.0-py3-none-any.whl
-pip3 install paddle_serving_app-0.7.0-py3-none-any.whl
-```
+   ```bash
+   # Install serving which used to start the service
+   wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_server_gpu-0.7.0.post102-py3-none-any.whl
+   pip3 install paddle_serving_server_gpu-0.7.0.post102-py3-none-any.whl
+   # Install paddle-serving-server for cuda10.1
+   # wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_server_gpu-0.7.0.post101-py3-none-any.whl
+   # pip3 install paddle_serving_server_gpu-0.7.0.post101-py3-none-any.whl
+
+   # Install serving which used to start the service
+   wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_client-0.7.0-cp37-none-any.whl
+   pip3 install paddle_serving_client-0.7.0-cp37-none-any.whl
+
+   # Install serving-app
+   wget https://paddle-serving.bj.bcebos.com/test-dev/whl/paddle_serving_app-0.7.0-py3-none-any.whl
+   pip3 install paddle_serving_app-0.7.0-py3-none-any.whl
+   ```
 
    **note:** If you want to install the latest version of PaddleServing, refer to [link](https://github.com/PaddlePaddle/Serving/blob/v0.7.0/doc/Latest_Packages_CN.md).