chore: update image size

docs/Sensor/Grove/Grove_Sensors/AI-powered/Grove-vision-ai-v2/Development/grove_vision_ai_v2_at_library.md

@@ -52,7 +52,7 @@ The AT command set specification can be found at [SSCMA-Micro](https://github.co
 If you need to flash a new firmware or update the firmware, you can navigate to the [SenseCraft AI](https://seeed-studio.github.io/SenseCraft-Web-Toolkit/#/setup/process) website.
 :::
 
-<p style={{textAlign: 'center'}}><img src="https://files.seeedstudio.com/wiki/grove-vision-ai-v2/dev/at-diagram.png" alt="at diagram" width={420} height="auto" /></p>
+<p style={{textAlign: 'center'}}><img src="https://files.seeedstudio.com/wiki/grove-vision-ai-v2/dev/at-diagram.png" alt="at diagram" width={320} height="auto" /></p>
 
 <div class="github_container" style={{textAlign: 'center'}}>
     <a class="github_item" href="https://github.com/Seeed-Studio/SSCMA-Micro/blob/dev/docs/protocol/at_protocol.md">