update install command (#2587)

Author: AmberC0209

README.md

@@ -380,7 +380,7 @@ python -m pip install paddlepaddle-gpu==3.0.0b2 -i https://www.paddlepaddle.org.
 * **安装PaddleX**
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b2-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 
 > ❗ 更多安装方式参考 [PaddleX 安装教程](https://paddlepaddle.github.io/PaddleX/latest/installation/installation.html)

README_en.md

@@ -380,7 +380,7 @@ python -m pip install paddlepaddle-gpu==3.0.0b2 -i https://www.paddlepaddle.org.
 * **Installing PaddleX**
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b1-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 
 > ❗For more installation methods, refer to the [PaddleX Installation Guide](https://paddlepaddle.github.io/PaddleX/latest/en/installation/installation.html).

docs/index.en.md

@@ -123,7 +123,7 @@ PaddleX 3.0 is a low-code development tool for AI models built on the PaddlePadd
 ### Installing PaddleX
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b2-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 
 > ❗ For more installation methods, please refer to the [PaddleX Installation Guide](https://paddlepaddle.github.io/PaddleX/latest/installation/installation.html)

docs/index.md

@@ -123,7 +123,7 @@ PaddleX 3.0 是基于飞桨框架构建的低代码开发工具，它集成了
 ### 安装PaddleX
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b2-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 
 > ❗ 更多安装方式参考 [PaddleX 安装教程](https://paddlepaddle.github.io/PaddleX/latest/installation/installation.html)

docs/installation/installation.en.md

@@ -17,7 +17,7 @@ After installing PaddlePaddle (refer to the [PaddlePaddle Local Installation Tut
 > ❗ <b>Note</b>: Please ensure that PaddlePaddle is successfully installed before proceeding to the next step.
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b2-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 
 ### 1.2 Plugin Installation Mode

docs/installation/installation.md

@@ -19,7 +19,7 @@ PaddleX为您提供了两种安装模式：<b>Wheel包安装</b>和<b>插件安
 > ❗ 注：请务必保证 PaddlePaddle 安装成功，安装成功后，方可进行下一步。
 
 ```bash
-pip install https://paddle-model-ecology.bj.bcebos.com/paddlex/whl/paddlex-3.0.0b2-py3-none-any.whl
+pip install paddlex==3.0.0b2
 ```
 ### 1.2 插件安装模式
 若您使用PaddleX的应用场景为<b>二次开发</b> （例如重新训练模型、微调模型、自定义模型结构、自定义推理代码等），那么推荐您使用<b>功能更加强大</b>的插件安装模式。