message: [improvement] fix coupon demo typo
diff: @@ -85,7 +85,7 @@ export default {
  return {
  ...this.coupon,
  id: 3,
  - avaliable: 0,
  + available: 0,
  reason: this.$t('coupon.reason')
  }
  },
  @@ -94,7 +94,7 @@ export default {
  return {
  ...this.discountCoupon,
  id: 4,
  - avaliable: 0,
  + available: 0,
  reason: this.$t('coupon.reason')
  }
  }
  