docs: fix bloc pattern article link

Author: robsonsilv4

packages/bloc/README.md

@@ -21,7 +21,7 @@
 
 ---
 
-A dart package that helps implement the [BLoC pattern](https://www.didierboelens.com/2018/08/reactive-programming---streams---bloc).
+A dart package that helps implement the [BLoC pattern](https://www.flutteris.com/blog/en/reactive-programming-streams-bloc).
 
 **Learn more at [bloclibrary.dev](https://bloclibrary.dev)!**