coredeveloper

Results 3 issues of coredeveloper

- import package:example replaced with proper references. - Scaffold.of(context, nullOk: true) used instead of unsupported Scaffold.maybeOf(context)

This line was fixed and still for some reason it's still in master and still causing the issue. ``` ../../../../../.pub-cache/hosted/pub.dartlang.org/flutter_neumorphic-3.0.4+1/lib/src/widget/app_bar.dart:147:45: Error: Method not found: 'Scaffold.maybeOf'. final ScaffoldState scaffold = Scaffold.maybeOf(context);...

The multiplication sign label change to better visualize on the graph (aligned in a middle)