chore: add model link

app.py

@@ -197,9 +197,10 @@ css = """
 
 with gr.Blocks(css=css) as demo:
     with gr.Column(elem_id="col-container"):
-        gr.Markdown(f"""
-        # Random IllustriousXL
-        """)
+        gr.Markdown("""
+# Random IllustriousXL
+Model: [IllustriousXL v0.1](https://huggingface.co/OnomaAIResearch/Illustrious-xl-early-release-v0)
+""")
 
         with gr.Row():
             subject_radio = gr.Dropdown(