Update README.md

Author: lizhuoyuan

README.md

@@ -179,6 +179,8 @@ Column(
             )
 ```
 
+[widget test](https://github.com/OpenFlutter/flutter_screenutil/issues/115)
+
 ### Example:
 
 [example demo](/example/lib/main.dart)
@@ -187,5 +189,3 @@ Column(
 
 ![effect](demo_en.png)
 ![tablet effect](demo_tablet_en.png)
-
-[widget test](https://github.com/OpenFlutter/flutter_screenutil/issues/115)