chore: minor tweaks for better architecture

routes/__init__.py

@@ -4,7 +4,7 @@ from .auth import router as auth_router
 from .health import router as health_router
 from .link_codes import router as link_code_router
 from .orders import router as orders_router
-from .payments import payment_routers
+from .payments import payment_router
 from .plans import router as plans_router
 from .users import router as users_routers
 
@@ -15,5 +15,5 @@ routers: list[APIRouter] = [
     users_routers,
     health_router,
     link_code_router,
-    *payment_routers,
+    payment_router,
 ]