修改readme

Author: anonymity-du

README.md

@@ -2,8 +2,7 @@
 双向滑动，滑块可以重叠, 左边滑块不能移动到右边滑块的右边。Two slider can overlap, and the left slider can not be moved to right of the right  slider
 
 
-OC版本
-<https://github.com/anonymity-du/DoubleSliderView-Objective-C>
+[OC版本](https://github.com/anonymity-du/DoubleSliderView-Objective-C)
 
 示例