Update app.py

app.py

@@ -64,6 +64,6 @@ if uploaded_file is not None:
         return list_of_column_key
 
     if not list_of_column_key:
-        st.error('Unfortunately, you don't have a column containing keywords in your data. Please check again. If you want to use it in another column, please rename it to "Keywords".')
+        st.error("Unfortunately, you don't have a column containing keywords in your data. Please check again. If you want to use it in another column, please rename it to 'Keywords'.")
     else:
         st.write('✅')