docs: enhanced documentation

packages/pinball_components/lib/src/components/signpost/cubit/signpost_state.dart

@@ -3,15 +3,15 @@
 part of 'signpost_cubit.dart';
 
 enum SignpostState {
-  /// Signpost with no active dashes.
+  /// Signpost with no active eggs.
   inactive,
 
-  /// Signpost with a single sign of lit up dashes.
+  /// Signpost with a single sign of lit up eggs.
   active1,
 
-  /// Signpost with two signs of lit up dashes.
+  /// Signpost with two signs of lit up eggs.
   active2,
 
-  /// Signpost with all signs of lit up dashes.
+  /// Signpost with all signs of lit up eggs.
   active3,
 }

packages/pinball_components/lib/src/components/signpost/signpost.dart

@@ -33,7 +33,7 @@ class Signpost extends BodyComponent with InitialPosition {
           ],
         );
 
-  /// Creates an [Signpost] without any children.
+  /// Creates a [Signpost] without any children.
   ///
   /// This can be used for testing [Signpost]'s behaviors in isolation.
   // TODO(alestiago): Refactor injecting bloc once the following is merged: