Make RRD Graph VPN Users page title more friendly
Make RRD Graph VPN Users page title more friendly

Rather than ucfirst("vpnusers") becomes "Vpnusers".
ptorsten/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,jxmx/pfsense,phil-davis/pfsense,brunostein/pfsense,phil-davis/pfsense,brunostein/pfsense,jxmx/pfsense,ptorsten/pfsense,dennypage/pfsense,ch1c4um/pfsense,dennypage/pfsense,pfsense/pfsense,NewEraCracker/pfsense,NOYB/pfsense,phil-davis/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,dennypage/pfsense,ch1c4um/pfsense,pfsense/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,NewEraCracker/pfsense,pfsense/pfsense,ch1c4um/pfsense,brunostein/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,NewEraCracker/pfsense,NOYB/pfsense