Update version info to 0.2.1.dev3 (#1424)

### What problem does this PR solve?

Update version info

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

README.md

@@ -55,7 +55,7 @@ Supports a wide range of data types including strings, numerics, vectors, and mo
 Infinity, also available as a Python module, eliminates the need for a separate back-end server and all the complex communication settings. Using `pip install` and `import infinity`, you can quickly build a local AI application in Python, leveraging the world's fastest and the most powerful RAG database:
 
    ```bash
-   pip install infinity-sdk==0.2.1.dev2
+   pip install infinity-sdk==0.2.1.dev3
    ```
 
    ```python

docs/getstarted/deploy_infinity_server.mdx

@@ -30,7 +30,7 @@ This approach allows you to embed Infinity as a module in a Python application.
 ### Install Infinity as a module
 
 ```
-pip install infinity-sdk==0.2.1.dev2
+pip install infinity-sdk==0.2.1.dev3
 ```
 
 ### Create an Infinity object
@@ -98,7 +98,7 @@ If you are on Windows 10+, you must enable WSL or WSL2 to deploy Infinity using
 ### Install Infinity client
 
 ```
-pip install infinity-sdk==0.2.1.dev2
+pip install infinity-sdk==0.2.1.dev3
 ```
 
 ### Connect to Infinity Server 
@@ -140,14 +140,14 @@ This section provides instructions on deploying Infinity using binary package on
 
 Fedora/RHEL/CentOS/OpenSUSE
 ```bash
-sudo rpm -i infinity-0.2.1.dev2-x86_64.rpm
+sudo rpm -i infinity-0.2.1.dev3-x86_64.rpm
 sudo systemctl start infinity
 ```
   </TabItem>
   <TabItem value="ubuntu">
 
 ```bash
-sudo dpkg -i infinity-0.2.1.dev2-x86_64.deb
+sudo dpkg -i infinity-0.2.1.dev3-x86_64.deb
 sudo systemctl start infinity
 ```
 
@@ -157,7 +157,7 @@ sudo systemctl start infinity
 ### Install Infinity client
 
 ```
-pip install infinity-sdk==0.2.1.dev2
+pip install infinity-sdk==0.2.1.dev3
 ```
 
 ### Connect to Infinity Server 

docs/getstarted/quickstart.md

@@ -17,7 +17,7 @@ Infinity, also available as a Python module, eliminates the need for a separate
 
 1. Install Infinity as a module:
    ```bash
-   pip install infinity-sdk==0.2.1.dev2
+   pip install infinity-sdk==0.2.1.dev3
    ```
 2. Use Infinity to conduct a KNN search:
    ```python