Update README.md

@@ -207,13 +207,13 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
                     'My font size is 14px on the design draft and will not change with the system.',
                     'My font size is 14px on the design draft and will not change with the system.',
                     style: TextStyle(
                     style: TextStyle(
                       color: Colors.black,
                       color: Colors.black,
-                      fontSize: ScreenUtil().setSp(14, false),
+                      fontSize: ScreenUtil().setSp(14),
                     )),
                     )),
                 Text(
                 Text(
                     'My font size is 14px on the design draft and will change with the system.',
                     'My font size is 14px on the design draft and will change with the system.',
                     style: TextStyle(
                     style: TextStyle(
                       color: Colors.black,
                       color: Colors.black,
-                      fontSize: ScreenUtil().setSp(14),
+                      fontSize: ScreenUtil().setSp(14,true),
                     )),
                     )),
               ],
               ],
             )
             )