Add library_name and link to code

This PR adds a link to the Github repository for improved discoverability.
It also adds `library_name: transformers`, ensuring the "how to use" button is displayed.

README.md

@@ -1,13 +1,17 @@
 ---
-license: apache-2.0
+base_model:
+- Qwen/Qwen2.5-VL-7B-Instruct
 datasets:
 - kolerk/TON-Math-SFT
 language:
 - en
+license: apache-2.0
 metrics:
 - accuracy
-base_model:
-- Qwen/Qwen2.5-VL-7B-Instruct
 pipeline_tag: image-text-to-text
+library_name: transformers
 ---
-This is the model cited in the paper: [Think or Not? Selective Reasoning via Reinforcement Learning for Vision-Language Models](https://arxiv.org/abs/2505.16854).
+
+This is the model cited in the paper: [Think or Not? Selective Reasoning via Reinforcement Learning for Vision-Language Models](https://arxiv.org/abs/2505.16854).
+
+Code: https://github.com/kokolerk/TON