hugo-theme-stack/demo/config/_default/menu.toml

[[social]]
    identifier = "github"
    name       = "GitHub"
    url        = "https://github.com/CaiJimmy/hugo-theme-stack"

    [social.params]
        icon = "brand-github"

[[social]]
    identifier = "twitter"
    name       = "Twitter"
    url        = "https://twitter.com"

    [social.params]
        icon = "brand-twitter"