update documentation about the installation (#12565)

* update documentation about the installation

* Apply suggestions from code review

Co-authored-by: jzhang533 <jzhang533@gmail.com>

---------

Co-authored-by: jzhang533 <jzhang533@gmail.com>

doc/doc_ch/multi_languages.md

@@ -57,11 +57,12 @@ pip install paddlepaddle-gpu
 
 pip 安装
 ```
-pip install "paddleocr>=2.0.6" # 推荐使用2.0.6版本
+pip install paddleocr
 ```
+
 本地构建并安装
 ```
-python3 setup.py bdist_wheel
+python3 -m build
 pip3 install dist/paddleocr-x.x.x-py3-none-any.whl # x.x.x是paddleocr的版本号
 ```
 

doc/doc_ch/quickstart.md

@@ -22,16 +22,16 @@
 
 > 如果您没有基础的Python运行环境，请参考[运行环境准备](./environment.md)。
 
-- 您的机器安装的是CUDA9或CUDA10，请运行以下命令安装
+- 您的机器安装的是CUDA 11，请运行以下命令安装
 
   ```bash
-  python3 -m pip install paddlepaddle-gpu -i https://mirror.baidu.com/pypi/simple
+  pip install paddlepaddle-gpu
   ```
 
 - 您的机器是CPU，请运行以下命令安装
 
   ```bash
-  python3 -m pip install paddlepaddle -i https://mirror.baidu.com/pypi/simple
+  pip install paddlepaddle
   ```
 
 更多的版本需求，请参照[飞桨官网安装文档](https://www.paddlepaddle.org.cn/install/quick)中的说明进行操作。
@@ -40,7 +40,7 @@
 ### 1.2 安装PaddleOCR whl包
 
 ```bash
-pip install "paddleocr>=2.0.1" # 推荐使用2.0.1+版本
+pip install paddleocr
 ```
 
 - 对于Windows环境用户：直接通过pip安装的shapely库可能出现`[winRrror 126] 找不到指定模块的问题`。建议从[这里](https://www.lfd.uci.edu/~gohlke/pythonlibs/#shapely)下载shapely安装包完成安装。
@@ -276,8 +276,8 @@ font = ImageFont.truetype("./doc/fonts/simfang.ttf", size=20)  # 根据需要调
 # 处理并绘制结果
 for res in results:
     for line in res:
-        box = [tuple(point) for point in line[0]]  # 将列表转换为元组列表
-        # 将四个角转换为两个角
+        box = [tuple(point) for point in line[0]]
+        # 找出边界框
         box = [(min(point[0] for point in box), min(point[1] for point in box)),
                (max(point[0] for point in box), max(point[1] for point in box))]
         txt = line[1][0]

doc/doc_ch/whl.md

@@ -7,13 +7,13 @@
 pip安装
 
 ```bash
-pip install "paddleocr>=2.0.1" # 推荐使用2.0.1+版本
+pip install paddleocr
 ```
 
 本地构建并安装
 
 ```bash
-python3 setup.py bdist_wheel
+python3 -m build
 pip3 install dist/paddleocr-x.x.x-py3-none-any.whl # x.x.x是paddleocr的版本号
 ```
 

doc/doc_en/multi_languages_en.md

@@ -58,11 +58,11 @@ pip install paddlepaddle-gpu
 
 pip install
 ```
-pip install "paddleocr>=2.0.6" # 2.0.6 version is recommended
+pip install paddleocr
 ```
 Build and install locally
 ```
-python3 setup.py bdist_wheel
+python3 -m build
 pip3 install dist/paddleocr-x.x.x-py3-none-any.whl # x.x.x is the version number of paddleocr
 ```
 

doc/doc_en/quickstart_en.md

@@ -25,19 +25,19 @@
 
 > If you do not have a Python environment, please refer to [Environment Preparation](./environment_en.md).
 
-- If you have CUDA 9 or CUDA 10 installed on your machine, please run the following command to install
+- If you have CUDA 11 installed on your machine, please run the following command to install
 
   ```bash
-  python -m pip install paddlepaddle-gpu -i https://pypi.tuna.tsinghua.edu.cn/simple
+  pip install paddlepaddle-gpu
   ```
 
 - If you have no available GPU on your machine, please run the following command to install the CPU version
 
   ```bash
-  python -m pip install paddlepaddle -i https://pypi.tuna.tsinghua.edu.cn/simple
+  python -m pip install paddlepaddle
   ```
 
-For more software version requirements, please refer to the instructions in [Installation Document](https://www.paddlepaddle.org.cn/install/quick) for operation.
+For more software version requirements, please refer to the instructions in [Installation Document](https://www.paddlepaddle.org.cn/en/install/quick) for operation.
 
 <a name="12-install-paddleocr-whl-package"></a>
 
@@ -289,8 +289,8 @@ font = ImageFont.truetype("./doc/fonts/simfang.ttf", size=20)  # Adjust size as
 # Process and draw results
 for res in results:
     for line in res:
-        box = [tuple(point) for point in line[0]]  # Convert list of lists to list of tuples
-        # Convert four corners to two corners
+        box = [tuple(point) for point in line[0]]
+        # Finding the bounding box
         box = [(min(point[0] for point in box), min(point[1] for point in box)),
                (max(point[0] for point in box), max(point[1] for point in box))]
         txt = line[1][0]

doc/doc_en/whl_en.md

@@ -9,7 +9,7 @@ pip install "paddleocr>=2.0.1" # Recommend to use version 2.0.1+
 
 build own whl package and install
 ```bash
-python3 setup.py bdist_wheel
+python3 -m build
 pip3 install dist/paddleocr-x.x.x-py3-none-any.whl # x.x.x is the version of paddleocr
 ```
 ## 2 Use