added debug-flag to manpage
added debug-flag to manpage

koebi/i3lock,ramnes/i3lock,kuruczgyurci/i3lock,kuruczgyurci/i3lock,sebastian-frysztak/i3lock-color,kuruczgyurci/i3lock,sm4tik/i3lock,sebastian-frysztak/i3lock-color,ravinrabbid/i3lock-svg,stettberger/i4lock,ravinrabbid/i3lock-svg,endir/i3lock