docs: complete the homepage metadata signals

Adds `og:type` alongside the other site-wide Open Graph defaults, and a description and url to the Organization identity so the JSON-LD node carries the fields agents use for entity resolution.

Author: benjamincanac

docs/app/app.vue

@@ -17,6 +17,7 @@ useHead({
 if (import.meta.server) {
   useSeoMeta({
     ogSiteName: 'Nuxt UI',
+    ogType: 'website',
     twitterCard: 'summary_large_image'
   })
 

docs/nuxt.config.ts

@@ -474,6 +474,8 @@ export default defineNuxtConfig({
     identity: {
       type: 'Organization',
       name: 'Nuxt',
+      description: 'Nuxt is the open source team behind the Nuxt framework and Nuxt UI, a Vue component library built on Reka UI and Tailwind CSS.',
+      url: 'https://ui.nuxt.com',
       logo: '/icon.svg',
       sameAs: [
         'https://github.com/nuxt',