cleaned up documentation for geopm_ctl_create()
cleaned up documentation for geopm_ctl_create()

sssylvester/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,sssylvester/geopm,geopm/geopm,sssylvester/geopm,sssylvester/geopm