docs: update to @nuxt/content@next (#2379)

Co-authored-by: Farnabaz <farnabaz@gmail.com>

docs/content.config.ts

@@ -0,0 +1,27 @@
+import { defineCollection, z } from '@nuxt/content'
+
+export const collections = {
+  content: defineCollection({
+    type: 'page',
+    source: '**/*',
+    schema: z.object({
+      links: z.array(z.object({
+        label: z.string(),
+        icon: z.string(),
+        avatar: z.object({
+          src: z.string(),
+          alt: z.string()
+        }).optional(),
+        to: z.string(),
+        target: z.string().optional()
+      })),
+      select: z.object({
+        items: z.array(z.object({
+          label: z.string(),
+          icon: z.string(),
+          to: z.string()
+        }))
+      })
+    })
+  })
+}