How can I update a file I uploaded?

[Titan_Bow]

I made a mistake in the README file of a recent re-paint I posted.  How can I post an update without simply uploading the file a second time?

[pete]

It is often better to upload a complete new file because people do not like editing config files - but otherwise if you want to add an update simply upload the update. I will link it to the required base file.

Thanks