It is written in the documentation. It is in a PDF format inside of the 7z file. It is for the USA version (English), version 1.0, with a header.
The patch doesn't work for the version 1.1. Probably, you are using the version 1.1 or a rom without the header.
I will update the rom information for the page later. It was one of my first hacks and the rom information field didn't exist at the time of the submission.