refine example demo

src/views/example/list.vue

 <template>
   <div class="app-container">
 
-    <el-table v-loading.body="listLoading" :data="list" border fit highlight-current-row style="width: 100%">
+    <el-table v-loading="listLoading" :data="list" border fit highlight-current-row style="width: 100%">
       <el-table-column align="center" label="ID" width="80">
         <template slot-scope="scope">
           <span>{{ scope.row.id }}</span>
@@ -87,7 +87,7 @@ export default {
       listLoading: true,
       listQuery: {
         page: 1,
-        limit: 10
+        limit: 20
       }
     }
   },