fix: @nuxt/content v3.7 compatibility

Author: harlan-zw

src/content.ts

@@ -5,8 +5,9 @@ export const schema = z.object({
   robots: z.union([z.string(), z.boolean()]).optional(),
 })
 
-export function asRobotsCollection<T extends Collection<any>>(collection: T): T {
+export function asRobotsCollection<T>(collection: Collection<T>): Collection<T> {
   if (collection.type === 'page') {
+    // @ts-expect-error untyped
     collection.schema = collection.schema ? schema.extend(collection.schema.shape) : schema
   }
   return collection