There is no such file as /bin/cgconfig.conf, unless you created it yourself in the wrong place.
/bin/cgconfig is a program from the cgnslib package for computational fluid dynamics. It is not related to /etc/cgconfig.conf or cgroups. If you accidentally deleted /bin/cgconfig, you can reinstall the package:
$ sudo dnf reinstall cgnslib
If you have any questions about configuring cgroups, please make a separate post for it. RHEL 6 documentation is probably outdated for current Fedora, which uses cgroups-v2 by default since F31.
Technically /usr/bin/cgconfig; /bin is a symlink to /usr/bin. ↩︎