Reword text in etc/rc
Reword text in etc/rc

to improve the English.
Resubmit of PR https://github.com/pfsense/pfsense/pull/1847
jxmx/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,ch1c4um/pfsense,pfsense/pfsense,phil-davis/pfsense,ptorsten/pfsense,phil-davis/pfsense,ch1c4um/pfsense,NewEraCracker/pfsense,brunostein/pfsense,ch1c4um/pfsense,jxmx/pfsense,dennypage/pfsense,NOYB/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,brunostein/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,ch1c4um/pfsense,pfsense/pfsense,dennypage/pfsense,dennypage/pfsense,ptorsten/pfsense,NOYB/pfsense