message: docs(CouponList): fix Popup v-model usage
diff: @@ -30,7 +30,7 @@ app.use(CouponList);
  />
  <!-- Coupon List -->
  <van-popup
  - v-model="state.showList"
  + v-model:show="state.showList"
  round
  position="bottom"
  style="height: 90%; padding-top: 4px;"
  