Update src/interface.py

src/interface.py

@@ -72,7 +72,7 @@ def create_demo():
             with gr.Column(scale=0.20):
                 uploaded_pdf = gr.UploadButton("📁 Upload PDF", file_types=[".pdf"], elem_id='upload_pdf')
             #NEW
-            with gr.Colum(scale=0.20):
+            with gr.Column(scale=0.20):
                 download_button = gr.Button('Download Conversation History')
             
             # Conversation History