rdoc: fix detection of constructor comments
rdoc: fix detection of constructor comments

Openwsman/openwsman,vcrhonek/openwsman,kkaempf/openwsman,Openwsman/openwsman,kolbma/openwsman,kolbma/openwsman,kkaempf/openwsman,kkaempf/openwsman,vcrhonek/openwsman,vcrhonek/openwsman,Openwsman/openwsman,kolbma/openwsman,kkaempf/openwsman,vcrhonek/openwsman,Openwsman/openwsman,kolbma/openwsman,kolbma/openwsman,kkaempf/openwsman,kolbma/openwsman,vcrhonek/openwsman,Openwsman/openwsman,vcrhonek/openwsman,vcrhonek/openwsman,kkaempf/openwsman,kkaempf/openwsman,kolbma/openwsman,Openwsman/openwsman,Openwsman/openwsman