Update README_CN.md

Author: Chat2DB-Pro

README_CN.md

@@ -303,7 +303,7 @@ $ cp -r dist/index.html ../chat2db-server/chat2db-server-start/src/main/resource
 
 ##  联系我们
 
-<a><img src="https://github.com/chat2db/Chat2DB/assets/22975773/81d13eff-c615-49f5-aee3-4107089593e0" width="40%"/></a>
+<a><img src="https://github.com/chat2db/Chat2DB/assets/22975773/81d13eff-c615-49f5-aee3-4107089593e0" width="25%"/></a>
 
 - Email: Chat2DB@ch2db.com
 - Discord: [Join our Discord server](https://discord.gg/JDkwB6JS8A)