Migrate to nuxt content v3. Change articles layout.

content.config.ts

@@ -0,0 +1,19 @@
+import { defineCollection, defineContentConfig, z } from "@nuxt/content";
+
+export default defineContentConfig({
+  collections: {
+    articles: defineCollection({
+      source: "articles/**/*.md",
+      type: "page",
+      schema: z.object({
+        title: z.string(),
+        date: z.date(),
+        coverImage: z.object({
+          author: z.string(),
+          authorUrl: z.string().url(),
+          url: z.string().url(),
+        }),
+      }),
+    }),
+  },
+});