[improvement] optimize coupon text (#1934)

packages/locale/lang/zh-CN.js

@@ -31,7 +31,7 @@ export default {
   vanCouponCell: {
     title: '优惠券',
     tips: '使用优惠',
-    count: count => `您有 ${count} 个可用优惠`
+    count: count => `你有 ${count} 个可用优惠`
   },
   vanCouponList: {
     empty: '暂无优惠券',

packages/locale/lang/zh-HK.js

@@ -31,7 +31,7 @@ export default {
   vanCouponCell: {
     title: '優惠券',
     tips: '使用優惠',
-    count: count => `您有 ${count} 個可用優惠`
+    count: count => `你有 ${count} 個可用優惠`
   },
   vanCouponList: {
     empty: '暫無優惠券',