fix(RankingCard): 修正排名大于99时显示为99+而非实际数字

 <!--
  * @Date: 2025-01-09 00:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-10-09 15:57:25
+ * @LastEditTime: 2025-10-10 10:53:43
  * @FilePath: /lls_program/src/components/RankingCard.vue
  * @Description: 排行榜卡片组件
 -->
@@ -114,7 +114,7 @@
       <view class="my-rank-content">
         <view class="my-rank-left">
           <view class="my-rank-number">
-            {{ myRank.isNotRanked ? '-' : (myRank.rank > 99 ? myRank.rank + '+' : myRank.rank) }}
+            {{ myRank.isNotRanked ? '-' : (myRank.rank > 99 ? '99+' : myRank.rank) }}
           </view>
           <view class="my-avatar">
             <image :src="myRank.avatar_url || defaultAvatar" class="my-avatar-img" mode="aspectFill" />