fix: Add missing commas in function calls and improve code formatting

app/api/v1/sounds.py

@@ -10,7 +10,7 @@ from app.core.dependencies import get_current_active_user_flexible
 from app.models.credit_action import CreditActionType
 from app.models.sound import Sound
 from app.models.user import User
-from app.repositories.sound import SoundRepository, SoundSortField, SortOrder
+from app.repositories.sound import SortOrder, SoundRepository, SoundSortField
 from app.services.credit import CreditService, InsufficientCreditsError
 from app.services.vlc_player import VLCPlayerService, get_vlc_player_service