Fix deprecated use_column_width parameter in app.py, replace with use_container_width

app.py

@@ -341,7 +341,7 @@ def process_document(uploaded_file, left_col, right_col, sidebar_options):
                 with st.container():
                     processed_bytes = preprocess_image(uploaded_file.getvalue(), sidebar_options["preprocessing_options"])
                     # Use use_container_width=True for responsive design
-                    st.image(io.BytesIO(processed_bytes), use_column_width=True)
+                    st.image(io.BytesIO(processed_bytes), use_container_width=True)
                 
                 # Show preprocessing metadata in a well-formatted caption
                 meta_items = []