fix(llms): add missing import for defineNitroPlugin (#3170)

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

Author: atinux

src/features/llms/runtime/server/content-llms.plugin.ts

@@ -3,8 +3,9 @@ import { withBase } from 'ufo'
 import { onLLMsGenerate, onLLMsGenerateFull } from 'nuxt-llms/runtime'
 import type { ContentLLMSCollectionSection } from './utils'
 import { createDocumentGenerator, prepareContentSections } from './utils'
+// @ts-expect-error - typecheck does not detect defineNitroPlugin in imports
+import { defineNitroPlugin } from '#imports'
 
-// @ts-expect-error - typecheck does not derect
 export default defineNitroPlugin(() => {
   onLLMsGenerate(async (event, options) => {
     prepareContentSections(options.sections)