How to add canonical tag in Gridsome blog? about gridsome HOT 4 OPEN

<script>
export default {
  metaInfo() {
    return {
      title: this.$page.documentation.title,

      // just include a link property in this returned object here
      link: [{ rel: 'canonical', href: `${this.getBaseUrl}${this.$page.documentation.path}/` }],

      meta: [
        {
          key: 'description',
          name: 'description',
          content: this.$page.documentation.excerpt,
        },
        { name: 'description', content: this.$page.documentation.excerpt },
        { name: 'twitter:card', content: 'summary_large_image' },
        {
          name: 'twitter:description',
          content: this.$page.documentation.excerpt,
        },
        { name: 'twitter:title', content: this.$page.documentation.title },
        {
          name: 'twitter:site',
          content: `@${this.$static.metadata.siteAuthor}`,
        },
        {
          name: 'twitter:image',
          content: `${this.getBaseUrl}/default-thumb.png`,
        },
        {
          name: 'twitter:creator',
          content: `@${this.$static.metadata.siteAuthor}`,
        },
        { property: 'og:type', content: 'document' },
        { property: 'og:title', content: this.$page.documentation.title },
        {
          property: 'og:description',
          content: this.$page.documentation.excerpt,
        },
        {
          property: 'og:url',
          content: `${this.getBaseUrl}${this.$page.documentation.path}/`,
        },
        {
          property: 'og:image',
          content: `${this.getBaseUrl}/default-thumb.png`,
        },
        {
          property: 'og:image:secure_url',
          content: `${this.getBaseUrl}/default-thumb.png`,
        },
      ],
    }
  },

  components: {
    AppSidebar: () => import('~/components/parts/AppSidebar'),
  },
}
</script>

<script>
export default {
  metaInfo() {
    const pathUrl = `${this.$static.metadata.siteUrl}${this.$route.path}`
    return {
      link: [{ rel: 'canonical', href: pathUrl }],
      meta: [{ property: 'og:url', content: pathUrl }],
    }
  },
}
</script>