Revert "[averez-doc] try level 3 depth for toc"
Revert "[averez-doc] try level 3 depth for toc"

This reverts commit c7c1ff25ae031b2cb7b15454bfbafd212f50d6ae.

gsssrao/MozDef,mpurzynski/MozDef,ameihm0912/MozDef,ameihm0912/MozDef,mozilla/MozDef,jeffbryner/MozDef,netantho/MozDef,mozilla/MozDef,netantho/MozDef,DarkPrince304/MozDef,mpurzynski/MozDef,netantho/MozDef,triplekill/MozDef,Phrozyn/MozDef,526avijitgupta/MozDef,jvehent/MozDef,serbyy/MozDef,Phrozyn/MozDef,triplekill/MozDef,abhijithch/MozDef,serbyy/MozDef,526avijitgupta/MozDef,Phrozyn/MozDef,mpurzynski/MozDef,gdestuynder/MozDef,mpurzynski/MozDef,526avijitgupta/MozDef,DarkPrince304/MozDef,DarkPrince304/MozDef,abhijithch/MozDef,jeffbryner/MozDef,ameihm0912/MozDef,gdestuynder/MozDef,eXcomm/MozDef,eXcomm/MozDef,netantho/MozDef,serbyy/MozDef,eXcomm/MozDef,abhijithch/MozDef,gdestuynder/MozDef,ameihm0912/MozDef,jeffbryner/MozDef,jvehent/MozDef,526avijitgupta/MozDef,triplekill/MozDef,gsssrao/MozDef,eXcomm/MozDef,serbyy/MozDef,mozilla/MozDef,jeffbryner/MozDef,gsssrao/MozDef,DarkPrince304/MozDef,jvehent/MozDef,gsssrao/MozDef,gdestuynder/MozDef,jvehent/MozDef,triplekill/MozDef,abhijithch/MozDef,mozilla/MozDef,Phrozyn/MozDef