修改合约实时成交数据长度

src/views/contract/handicap.vue

@@ -106,7 +106,7 @@
           </div>
         </div>
         <div class="deal">
-          <div class="d-flex fn-12" v-for="(item, idx) in tradeList" :key="idx">
+          <div class="d-flex fn-12" v-for="(item, idx) in tradeList.slice(0,30)" :key="idx">
             <div class="w-7/24">
               {{ parseTime(item.ts, false, "{h}:{i}:{s}") }}
             </div>