fix article list

libs/types/src/content/templates/article-list.d.ts

@@ -5,6 +5,12 @@ import type { MediaEntry } from './shared'
  * to display when listing the entry on the article-list page.
  */
 export type ArticleEntry = {
+  alternativeText?: string
+  caption?: string
+  /**
+   * URL to the entry's thumbnail
+   */
+  thumbnailUrl?: string
   /**
    * URL to the markdown document of the article entry
    */