fix: Add dataset file upload restrictions (#29397)

Co-authored-by: kurokobo <kuro664@gmail.com>
Co-authored-by: yyh <92089059+lyzno1@users.noreply.github.com>

web/models/datasets.ts

@@ -156,7 +156,7 @@ export type CrawlOptions = {
 
 export type CrawlResultItem = {
   title: string
-  content: string
+  markdown: string
   description: string
   source_url: string
 }