Add link to Github repository

This PR adds a link to the Github repository, enabling easier discovery of the code used to train and evaluate this model.

README.md

@@ -6,6 +6,14 @@ base_model:
 - meta-llama/Llama-3.2-1B
 ---
 
+---
+license: llama3.2
+library_name: transformers
+pipeline_tag: text-classification
+base_model:
+- meta-llama/Llama-3.2-1B
+---
+
 ## Overview
 A brief description of what this model does and how it’s unique or relevant:
 
@@ -100,4 +108,6 @@ print(f"Overall Prompt Classification => {'UNSAFE' if overall_label == 1 else 'S
       primaryClass={cs.CL},
       url={https://arxiv.org/abs/2502.05163}, 
 }
-```
+```
+
+Code is available at https://github.com/yihedeng9/DuoGuard