This is an example of layout built using default git-wiki theme
To use it as your default theme you’ve to change layout configuration in your _config.yml, for example:
defaults:
-
scope:
path: ""
values:
layout: "git-wiki-default"
-
scope:
path: ""
type: "pages"
values:
layout: "git-wiki-default"
NOTE: it’s the default configuration available in _config.yml