[mal2html] Don't let "twocolumn" tables collapse
[mal2html] Don't let "twocolumn" tables collapse

Distrotech/gnome-doc-utils,Distrotech/yelp-xsl,Distrotech/yelp-xsl,jnavila/gnome-doc-utils,Distrotech/gnome-doc-utils,jnavila/gnome-doc-utils