docs: udpate demo

Author: tangjinzhou

components/list/demo/infinite-load.md

@@ -71,7 +71,7 @@ export default {
         this.loading = false
         return
       }
-      this.getData((res) => {
+      this.fetchData((res) => {
         this.data = data.concat(res.results)
         this.loading = false
       })

components/list/demo/test.vue

@@ -3,7 +3,6 @@ import Basic from './basic.md'
 import Search from './search.md'
 import Advanced from './advanced.md'
 import CustomItem from './custom-item.md'
-import LargeData from './large-data.md'
 import CN from '../index.zh-CN.md'
 import US from '../index.en-US.md'
 
@@ -49,7 +48,6 @@ export default {
         <Search />
         <Advanced />
         <CustomItem />
-        <LargeData />
         <api>
           <template slot='cn'>
             <CN/>