fix: correct comment formatting in VideoFrameThumbnail component

src/app/components/message/content/VideoFrameThumbnail.tsx

@@ -8,7 +8,7 @@ import { getCurrentAccessToken } from '../../../utils/auth';
 
 /**
  * Extracts the first frame from a video file and renders it as a thumbnail.
- * This is used as a fallback when no thumbnail metadata is provided.
+ * This is used as a fallback when no thumbnail metadata is provided. 
  */
 export type VideoFrameThumbnailProps = {
   mimeType: string;