remove whitespace around ids

app.py

@@ -306,7 +306,9 @@ user_input = False
 
 if option == "OpenReview paper ID":
     paper_id = st.text_input("Enter OpenReview ID (e.g. xC8xh2RSs2):")
+    paper_id = paper_id.strip()
     reviewer_id = st.text_input("Enter reviewer ID (e.g. gNxe):")
+    reviewer_id = reviewer_id.strip()
     if paper_id and reviewer_id:
         upload_file = False
         user_input = True