Update README.md

README.md

@@ -4,7 +4,7 @@
 
 <p align="center"><strong>不仅仅是网络请求的异步任务库</strong></p>
 
-<p align="center"><img src="https://i.imgur.com/NFL3tTk.jpg" width="60%"/></p>
+<p align="center"><img src="https://i.imgur.com/NFL3tTk.jpg" width="45%"/></p>
 
 <p align="center">
 <a href="https://jitpack.io/#liangjingkanji/Net"><img src="https://jitpack.io/v/liangjingkanji/Net.svg"/></a>