feat: pr suggestions

lib/game/bloc/game_bloc.dart

@@ -38,7 +38,7 @@ class GameBloc extends Bloc<GameEvent, GameState> {
           activatedBonusLetters: [],
           bonusHistory: [
             ...state.bonusHistory,
-            GameBonuses.letterSequence,
+            GameBonus.letterSequence,
           ],
         ),
       );

lib/game/bloc/game_state.dart

@@ -1,7 +1,9 @@
 part of 'game_bloc.dart';
 
-/// Defines bonuses that a player can gain during a [PinballGame].
-enum GameBonuses {
+/// Defines bonuses that a player can gain during a PinballGame.
+enum GameBonus {
+  /// Bonus achieved when the user activate all of the bonus
+  /// letters on the board
   letterSequence,
 }
 
@@ -35,9 +37,9 @@ class GameState extends Equatable {
   /// Active bonus letters.
   final List<int> activatedBonusLetters;
 
-  /// Holds the history of all the [GameBonus]es earned by the player during a 
-  /// [PinballGame].
-  final List<GameBonuses> bonusHistory;
+  /// Holds the history of all the [GameBonus]es earned by the player during a
+  /// PinballGame.
+  final List<GameBonus> bonusHistory;
 
   /// Determines when the game is over.
   bool get isGameOver => balls == 0;
@@ -49,7 +51,7 @@ class GameState extends Equatable {
     int? score,
     int? balls,
     List<int>? activatedBonusLetters,
-    List<GameBonuses>? bonusHistory,
+    List<GameBonus>? bonusHistory,
   }) {
     assert(
       score == null || score >= this.score,

test/game/bloc/game_bloc_test.dart

@@ -154,7 +154,7 @@ void main() {
             score: 0,
             balls: 3,
             activatedBonusLetters: [],
-            bonusHistory: [GameBonuses.letterSequence],
+            bonusHistory: [GameBonus.letterSequence],
           ),
         ],
       );

test/game/bloc/game_state_test.dart

@@ -175,7 +175,7 @@ void main() {
             score: gameState.score + 1,
             balls: gameState.balls + 1,
             activatedBonusLetters: const [0],
-            bonusHistory: const [GameBonuses.letterSequence],
+            bonusHistory: const [GameBonus.letterSequence],
           );
           expect(gameState, isNot(equals(otherGameState)));