doc/MAINTAINER_GUIDE.md updates
doc/MAINTAINER_GUIDE.md updates

narrative/stack,martin-kolinek/stack,juhp/stack,Blaisorblade/stack,juhp/stack,deech/stack,anton-dessiatov/stack,martin-kolinek/stack,harendra-kumar/stack,Blaisorblade/stack,harendra-kumar/stack,mrkkrp/stack,luigy/stack,Fuuzetsu/stack,sjakobi/stack,rubik/stack,narrative/stack,AndreasPK/stack,phadej/stack,anton-dessiatov/stack,Fuuzetsu/stack,deech/stack,MichielDerhaeg/stack,achernyak/stack,rubik/stack,luigy/stack,keent/stack,sjakobi/stack,keent/stack,achernyak/stack,AndrewRademacher/stack,AndreasPK/stack,Heather/stack,Heather/stack,phadej/stack,AndrewRademacher/stack,mrkkrp/stack,MichielDerhaeg/stack