Update README.md

zh/README.md

@@ -6,7 +6,7 @@ search: zh
 <p>
 <div align="center">
   <a href="//xmake.io/cn">
-    <img width="200" heigth="200" src="//tboox.org/static/img/xmake/logo256c.png">
+    <img width="200" heigth="200" src="https://tboox.org/static/img/xmake/logo256c.png">
   </a>  
 
   <h1>xmake</h1>