style(rechargeAudit): 优化支付凭证列的样式

src/views/audit/rechargeAudit.vue

@@ -95,10 +95,10 @@
             <el-table-column prop="payModel" label="支付方式" width="110px"/>
             <el-table-column prop="voucher" label="支付凭证" width="110px">
               <template #default="scope">
-                <div v-if="scope.row.voucher" style="cursor: pointer;" @click="previewImage(scope.row.voucher)">
-                  <img :src="scope.row.voucher" alt="支付凭证" style="width: 80px; height: auto;">
+                <div v-if="scope.row.voucher" style="display: flex; justify-content: center; align-items: center; cursor: pointer;" @click="previewImage(scope.row.voucher)">
+                  <img :src="scope.row.voucher" alt="支付凭证" style="width: auto; height: 40px;">
                 </div>
-                <div v-else>--</div>
+                <div v-else style="display: flex; justify-content: center; align-items: center; height: 40px;">--</div>
               </template>
             </el-table-column>
             <el-table-column prop="adminName" label="提交人" width="100px"/>