Update diy_main.htm

src/admin/templets/diy_main.htm

@@ -13,7 +13,7 @@
 			<td class="tbtitletxt" background="../static/web/img/tbg.gif">
 				<table width="96%" cellpadding="0" cellspacing="0">
 					<tr>
-						<td width="30%" height="36" style="padding-left:10px"><a href="diy_add.php" class="btn btn-success btn-sm ml-3">增加新的自定义表单</a></td>
+						<td width="30%" height="36" style="padding-left:10px"><a href="diy_add.php" class="btn btn-success btn-sm">增加新的自定义表单</a></td>
 						<td align="right"></td>
 					</tr>
 				</table>