Update app.py

app.py

@@ -112,7 +112,7 @@ with demo:
     gr.Markdown("# PDB viewer using Mol*")
     gr.Markdown("""If using please cite 
     > David Sehnal, Sebastian Bittrich, Mandar Deshpande, Radka Svobodová, Karel Berka, Václav Bazgier, Sameer Velankar, Stephen K Burley, Jaroslav Koča, Alexander S Rose: Mol* Viewer: modern web app for 3D visualization and analysis of large biomolecular structures, Nucleic Acids Research, 2021; 10.1093/nar/gkab31.""")
-    public_link = "https://simonduerr-molstar-gradio.hf.space"
+    public_link = gr.Variable(value="https://simonduerr-molstar-gradio.hf.space")
     with gr.Row():
         with gr.Box():
             inp = gr.Textbox(