There's no need to depend on gtk-doc to install .html files. See the tracking bug for details.
gimp-2.6.10-5.fc14 has been submitted as an update for Fedora 14. http://admin.fedoraproject.org/updates/gimp-2.6.10-5.fc14
gimp-2.6.10-5.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update gimp'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/gimp-2.6.10-5.fc14
gimp-2.6.10-5.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.