Add link to Github repository and task category

This PR adds a link to the Github repository and the task category.

README.md

@@ -24,4 +24,10 @@ configs:
   data_files:
   - split: train
     path: data/train-*
+task_categories:
+- image-text-to-text
 ---
+
+This repository contains the VG150 dataset transformed into datasets format with keys: "image_id", "image", "prompt_open", "prompt_close", "objects", and "relationships".
+
+Code: https://github.com/JosephZheng6/R1-SGG