fix: 修复placeholder国际化后只有一个的问题

src/pages/transaction/marketingAbility/merchantCoupon/merchantCouponUnsubmitted/components/CouponForm/schema.tsx

@@ -105,7 +105,7 @@ const schema: ISchema = {
               required: true,
               'x-component': 'RangePicker',
               'x-component-props': {
-                placeholder: [intl.formatMessage({ id: 'merchantCoupon.giveCouponStartTime' }) + ',' + intl.formatMessage({ id: 'merchantCoupon.giveCouponEndTime' })],
+                placeholder: [intl.formatMessage({ id: 'merchantCoupon.giveCouponStartTime' }), intl.formatMessage({ id: 'merchantCoupon.giveCouponEndTime' })],
                 showTime: true,
                 disabledDate: (current) => current && current < moment().startOf('day'),
                 disabledTime: (current, type) => {