docs(readme): adapt to GitHub conventions

Adapt to the 'README.adoc' file to the GitHub conventions due to the
documentation being seperated from it.

README.adoc

@@ -1,4 +1,4 @@
-= dotfiles(1)
+= dotfiles
 :archwiki-dotfiles: link:https://wiki.archlinux.org/title/Dotfiles
 :home-configuration-nix-5: link:https://nix-community.github.io/home-manager/options.xhtml
 :home-manager: link:https://nix-community.github.io/home-manager
@@ -14,11 +14,7 @@
 :repository-star-history-src-dark: https://api.star-history.com/svg?repos={repository-path}&type=Date&theme=dark
 :repository-star-history-src-light: https://api.star-history.com/svg?repos={repository-path}&type=Date
 
-== Name
-
-dotfiles - NAHO's dotfiles
-
-== Description
+== About
 
 {naho}[NAHO]'s {archwiki-dotfiles}[dotfiles] managed with {home-manager}[Home
 Manager].