fix(订单表单): 将总数量字段的精度从4改为0

src/components/order-form/form-option.js

@@ -148,7 +148,7 @@ export const orderFormOption = {
           prop: 'totalQuantity',
           type: 'number',
           span: 8,
-          precision: 4,
+          precision: 0,
           placeholder: '请输入订单总数量',
           rules: [{
             required: true,