Update media_add.htm

src/admin/templets/media_add.htm

@@ -50,7 +50,7 @@
       <td height="26" background='../static/web/img/tbg.gif'>
         <table width="98%" border="0" cellpadding="0" cellspacing="0" class="table table-borderless">
           <tr>
-            <td width="45%">上传新文件：</td>
+            <td width="45%">上传新文件</td>
             <td width="55%" align="right"><a href='media_main.php' class="btn btn-success btn-sm">附件/媒体数据管理</a></td>
           </tr>
         </table>