update contact

Author: fbchen

README.md

@@ -263,8 +263,13 @@ If it helps you a lot, consider sponsoring me a cup of milk tea.
 <br/>
 [Paypal](https://www.paypal.com/paypalme/hackware1993)
 <br/>
+<br/>
 ![support.webp](https://github.com/hackware1993/flutter-constraintlayout/blob/master/support.webp?raw=true)
 
+# Contact
+
+[email protected]
+
 # License
 
 ```

lib/constrait_layout/constraint_layout.dart

@@ -35,7 +35,7 @@ import 'package:flutter/rendering.dart';
 ///
 /// author: hackware
 /// home page: https:///github.com/hackware1993
-/// email: cfb1993@163.com
+/// email: hackware1993@gmail.com
 class ConstraintLayout extends MultiChildRenderObjectWidget {
   /// TODO implement debug function
   final bool debugShowGuideline;