default posts shouldn't include about.md

[DaVinci42]

Here is my folder structure:

├── page
│   └── about
│       └── about.md
└── post
	├── article_00.md 
	└── article_01.md

and config.toml:

[[menu.main]]
	name = "Blog"
	url = "/"
	weight = 1

[[menu.main]]
	name = "About"
	url = "/page/about/"
	weight = 3

I think about.md should only appear in the About tab, not on homepage