Fix typo to correctly load interface groups on startup.
Fix typo to correctly load interface groups on startup.

NewEraCracker/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,jxmx/pfsense,ptorsten/pfsense,dennypage/pfsense,NewEraCracker/pfsense,pfsense/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,brunostein/pfsense,pfsense/pfsense,NewEraCracker/pfsense,brunostein/pfsense,ch1c4um/pfsense,NewEraCracker/pfsense,pfsense/pfsense,brunostein/pfsense,ptorsten/pfsense,dennypage/pfsense,jxmx/pfsense,phil-davis/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,pfsense/pfsense,NOYB/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,phil-davis/pfsense,ch1c4um/pfsense,NOYB/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,dennypage/pfsense