📝 第三次修改文档

Author: bai3

README.md

@@ -7,5 +7,9 @@ thought the project is so easy,....sorry my english so bad,so I
 don't konw to say.
 用中文讲，就是没啥可说的。
 <br/>
-<img src="./src/assets/readme1.png">
-<img src="./src/assets/readme2.png">
+<centet>
+<img src="./src/assets/readme1.png"><br/>
+</center>
+<center>
+<img src="./src/assets/readme2.png">
+</center>