[ci skip] remove empty line.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

README.md

@@ -6,7 +6,6 @@
 [![GoDoc](https://godoc.org/github.com/gin-contrib/cors?status.svg)](https://godoc.org/github.com/gin-contrib/cors)
 [![Join the chat at https://gitter.im/gin-gonic/gin](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/gin-gonic/gin?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-
 Gin middleware/handler to enable CORS support.
 
 ## Usage