The chapter about making bootable media using downloaded ISOs currently only has instructions for a command line on Linux and Windows. The Fedora LiveUSB Creator tool has recently been updated and can now use direct write (dd) - we previously didn't document it because it wasn't capable of that and was therefore unreliable, but now it should be safe to document. The release announcement, including links, is here: https://lists.fedoraproject.org/pipermail/devel/2015-November/216327.html
The install guide has been retired, therefore I'm closing this bug. If you would like to report Fedora docs bugs in the future, please use the "bug" icon on the top right of the affected page, it will take you directly to the appropriate issue tracker.