The above snippet used to work but apparently it no longer does.
Things change in Hugo all the time and this is not my job.
In any case .Sections is what you need to use.
What does the following give you?
{{ range .Sections }}
<a href="{{ .Permalink }}">{{ .Title }}">
{{ end} }
EDIT
There is really no need posting external links to screenshots. If you want to show something then either share the project or share a project with dummy content that reproduces the setup.
Also see: Requesting Help