增加删除完善优化文档

Squashed commit of the following:

commit c0e6400bcd
Author: Sun <95302870@qq.com>
Date:   Fri Nov 10 13:02:35 2023 +0800

    更新说明文档

commit 0a81db157b
Author: Sun <95302870@qq.com>
Date:   Fri Nov 10 13:02:27 2023 +0800

    完善删除图标功能

service/router/panel/itemIcon.go

@@ -13,6 +13,6 @@ func InitItemIcon(router *gin.RouterGroup) {
 	{
 		r.POST("/panel/itemIcon/edit", itemIcon.Edit)
 		r.POST("/panel/itemIcon/getListByGroupId", itemIcon.GetListByGroupId)
-
+		r.POST("/panel/itemIcon/deletes", itemIcon.Deletes)
 	}
 }