How to make nested Params in config.toml

I want to make params in config.toml file like.

[author]
name: lavinho
image: google.com/img

like that after making them how to access them in theme file?

{{ .Params.author.name }}

I want to make them in config.toml file. Isn’t it like that {{.Site.Params.author.name}} ?

Yes, or even {{ $.Param "author.name" }} if you want to make it overridable via front-matter.