"...See Byebug.start with a block..." - 404 not found

[oystersauce8]

The byebug guide at https://github.com/deivid-rodriguez/byebug/blob/master/GUIDE.md has a link to "https://github.com/deivid-rodriguez/byebug/blob/master" titled "See Byebug.start with a block." This is a dead link now, but where was it meant to be linked to?