Fix typo

Author: Maciej Adamus

src/types/order.ts

@@ -67,7 +67,7 @@ export const orderItemInputRequest = z
         name: z.string(),
         sku: z.string().optional(),
         productId: z.string().optional(),
-        productVairantId: z.string().optional(),
+        productVariantId: z.string().optional(),
         imageUrl: z.string().optional(),
         quantity: z.number(),
         subscription: orderItemSubscriptionInputRequest.optional(),