Build: fix "without" argument

I failed making rpm files on RHEL6.
"--without=doc"  causes this error.
```
rpmbuild -bs --define "dist .fedora" --define "_sourcedir /home/share/repo/compile-1.1-el6/pacemaker" --define "_specdir   /home/share/repo/compile-1.1-el6/pacemaker" --define "_srcrpmdir /home/share/repo/compile-1.1-el6/pacemaker"  --without=doc  pacemaker.spec
--without=doc: unknown option
make: *** [srpm-fedora] Error 1
```

My rpm-build version is 4.8.0-27.
```
# rpm -q rpm-build
rpm-build-4.8.0-27.el6.x86_64
```