Updated doc

Author: vuongxuongminh

README.md

@@ -1,6 +1,6 @@
 <p align="center">
     <a href="https://github.com/yiisoft" target="_blank">
-        <img src="https://avatars0.githubusercontent.com/u/50674062" height="100px"> <img src="https://avatars0.githubusercontent.com/u/958072" height="100px">
+        <img src="https://avatars0.githubusercontent.com/u/958072" height="100px">
     </a>
     <h1 align="center">Laravel Validation</h1>
     <br>