Fix team registration table name

src/meal_manager/models.py

@@ -64,7 +64,7 @@ class Event(Base):
 
 
 class TeamRegistration(Base):
-    __tablename__ = "team_registration"
+    __tablename__ = "teamregistration"
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
     event_id: Mapped[int] = mapped_column(ForeignKey("event.id"))
     person_name: Mapped[str] = mapped_column(nullable=False)