Update README.md

Author: javaLuo

README.md

@@ -9,7 +9,7 @@
 ![img](public/demo.gif)
 
 ### 在线DEMO
-<a href="https://isluo.com/work/vue-filp-down/" target="_blank">https://isluo.com/work/vue-filp-down/</a>
+<a href="https://isluo.com/work/vue-flip-down/" target="_blank">https://isluo.com/work/vue-flip-down/</a>
 
 
 ### 安装