[Improvement] Coupon: upgrade style (#1636)

packages/locale/lang/en-US.js

@@ -40,10 +40,12 @@ export default {
     empty: 'No coupons',
     exchange: 'Exchange',
     close: 'Close',
+    enable: 'Available',
     disabled: 'Unavailable',
     placeholder: 'Coupon code'
   },
   vanCouponItem: {
+    valid: 'Valid',
     unlimited: 'Unlimited',
     discount: discount => `${discount * 10}% off`,
     condition: condition => `At least ${condition}`

packages/locale/lang/zh-CN.js

@@ -38,10 +38,12 @@ export default {
     empty: '暂无优惠券',
     exchange: '兑换',
     close: '不使用优惠',
-    disabled: '不可用优惠',
+    enable: '可使用优惠券',
+    disabled: '不可使用优惠券',
     placeholder: '请输入优惠码'
   },
   vanCouponItem: {
+    valid: '有效期',
     unlimited: '无使用门槛',
     discount: discount => `${discount}折`,
     condition: (condition) => `满${condition}元可用`

packages/locale/lang/zh-HK.js

@@ -39,11 +39,12 @@ export default {
   vanCouponList: {
     empty: '暫無優惠券',
     exchange: '兌換',
-    close: '不使用優惠',
-    disabled: '不可用優惠',
+    enable: '可使用優惠券',
+    disabled: '不可使用優惠券',
     placeholder: '請輸入優惠碼'
   },
   vanCouponItem: {
+    valid: '有效期',
     unlimited: '無使用門檻',
     discount: discount => `${discount}折`,
     condition: (condition) => `滿${condition}元可用`