correcting a mistake in a file after uploading

[lessour]

Hello,
I just made a contribution, with a pdf file, but I noticed (too late) that there were some little mistakes in my file. How can I change the file now?
Thank you for your answer

[Notenschreiber]

On the right side of the download arrow there is a small number #--------, click on it and follow the instructions.

[lessour]

Thanks a lot!