chg: remove duplicate line from install doc
chg: remove duplicate line from install doc

crruthe/MISP,MISP/MISP,Rafiot/MISP,crruthe/MISP,MISP/MISP,FloatingGhost/MISP,Rafiot/MISP,Rafiot/MISP,SteveClement/MISP,TheDr1ver/MISP,TheDr1ver/MISP,FIRSTdotorg/MISP,TheDr1ver/MISP,SteveClement/MISP,cristianbell/MISP,FIRSTdotorg/MISP,TheDr1ver/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,Rafiot/MISP,crruthe/MISP,cristianbell/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,devnull-/MISP,devnull-/MISP,devnull-/MISP,FloatingGhost/MISP,SteveClement/MISP,cristianbell/MISP,SteveClement/MISP,crruthe/MISP,cristianbell/MISP,devnull-/MISP,MISP/MISP,FloatingGhost/MISP