Fix the relative URLs to the download files, as should have been done in revision da4fd952e767.
Fix the relative URLs to the download files, as should have been done in
revision da4fd952e767.

jskeet/nodatime,zaccharles/nodatime,nodatime/nodatime,nodatime/nodatime,zaccharles/nodatime,BenJenkinson/nodatime,jskeet/nodatime,malcolmr/nodatime,zaccharles/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,malcolmr/nodatime,BenJenkinson/nodatime