我用RStudio制作了R package，可以正常安装，但是其中DESCRIPTION file不能打开，什么原因？我填写的是制作package工程中自动提供的模版，我改写如下：
Package: ggg
Type: Package
Title: What the Package Does (Title Case)
Version: 0.1.0
Author: lg
Maintainer: lg <lg@qq.com>
Description: More about what it does (maybe more than one line)
    Use four spaces when indenting paragraphs within the Description.
License: What license is it under?
Encoding: UTF-8
LazyData: true