devroom.io/themes/devroom-2020/layouts/partials/header.html

<header>
    <nav>
        {{ with .Site.Menus.main}}
            {{ range $index, $value := sort . }}
                {{ if (ne $index 0) }} - {{ end }}
                    <a href="{{ .URL | absLangURL }}">{{ .Name }}</a>
            {{ end }}
        {{ end }}
    </nav>
</header>