bug修复

README.md

@@ -27,7 +27,7 @@ com.zd
 
 ## 架构图
 
-<img src="https://oscimg.oschina.net/oscnet/up-82e9722ecb846786405a904bafcf19f73f3.png"/>
+<img src="https://oscimg.oschina.net/oscnet/up-82e9722ecb846786405a904bafcf19f73f3.png" alt=""/>
 
 ## 内置功能