Updated app instructions

app.py

@@ -115,12 +115,16 @@ def comparison(SMILES):
 with gr.Blocks() as demo:
     gr.Markdown(
         """
-        # 3DGrid-VQGAN SMILES to 3D Grid Reconstruction
+        # 3DGrid-VQGAN: SMILES to 3D Grid Reconstruction
+
         In this demo, provide a SMILES to generate a 3D electron density grid of shape `128x128x128` and then the demo uses the 3DGrid-VQGAN model to reconstruct the original grid.
+        
         To speed up the visualization process, we reduced the 3D grid size to `48x48x48`.
+        
         _This is just a demo environment; for heavy-duty usage, please visit:_  
         https://github.com/IBM/materials/tree/main/models/3dgrid_vqgan
         to download the model and run your own experiments.
+
         Please, be aware that long and complex SMILES sequences may take very long time to compute. Consider using simple SMILES molecules in this demo.
         """
     )