优化 Docs 内容

docs/upload/examples/accept.md

@@ -20,6 +20,7 @@
   </button>
 </div>
 
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/auto.md

@@ -3,6 +3,7 @@
   <button type="button" class="layui-btn" id="ID-upload-demo-action">开始上传</button>
 </div>
 
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/drag.md

@@ -6,6 +6,7 @@
   </div>
 </div>
 
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/files.table.md

@@ -19,7 +19,8 @@
   </div>
   <button type="button" class="layui-btn" id="ID-upload-demo-files-action">开始上传</button>
 </div>
- 
+
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/form.file.md

@@ -1,5 +1,6 @@
 <input type="file" name="file" id="ID-upload-demo-form-files">
- 
+
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/image.md

@@ -20,7 +20,8 @@
     <div class="layui-upload-list" id="upload-demo-preview"></div>
  </blockquote>
 </div>
- 
+
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/examples/size.md

@@ -5,6 +5,7 @@
   这里以限制 60KB 为例
 </div>
 
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;

docs/upload/index.md

@@ -39,6 +39,7 @@ toc: true
 <button type="button" class="layui-btn test-class-upload" lay-options="{}">上传</button>
 <button type="button" class="layui-btn test-class-upload" lay-options="{}">上传</button>
   
+<!-- import layui -->
 <script>
 layui.use(function(){
   var upload = layui.upload;