Renamed schemas to schema as per naming conventions

app/api/v1/vendor/orders.py

@@ -13,7 +13,7 @@ from app.api.deps import get_current_user
 from app.core.database import get_db
 from middleware.vendor_context import require_vendor_context
 from app.services.order_service import order_service
-from models.schemas.order import (
+from models.schema.order import (
     OrderResponse,
     OrderDetailResponse,
     OrderListResponse,