How to make sure hreflangs contain domain?

<link rel="alternate" href="/en" hreflang="en" data-hid="7fcee50">
<link rel="alternate" href="/de-DE" hreflang="de" data-hid="5d718b2">
<link rel="alternate" href="/de-DE" hreflang="de-DE" data-hid="26cc44a">
<link rel="alternate" href="/en-DE" hreflang="en-DE" data-hid="64015ce">
<link rel="alternate" href="/en" hreflang="x-default" data-hid="6527e7a">

i18n: {
    defaultLocale: 'en',
    detectBrowserLanguage: false,
    langDir: 'i18n/',
    locales: [
      {
        code: 'en',
        iso: 'en',
        file: 'en.json',
        domain: 'https://www.example.com',
      },
      {
        code: 'de-DE',
        iso: 'de-DE',
        file: 'de.json',
        domain: 'https://www.example.com',
      },
      {
        code: 'en-DE',
        iso: 'en-DE',
        file: 'en.json',
        domain: 'https://www.example.com',
      },
    ],
    strategy: 'prefix',
    vueI18n: './nuxt-i18n.js',
    seo: true,
}