docs: cgroups: fix typo about LXC cgroups
docs: cgroups: fix typo about LXC cgroups

rlaager/libvirt,elmarco/libvirt,libvirt/libvirt,shugaoye/libvirt,jfehlig/libvirt,taget/libvirt,nertpinx/libvirt,libvirt/libvirt,olafhering/libvirt,jardasgit/libvirt,datto/libvirt,libvirt/libvirt,datto/libvirt,taget/libvirt,shugaoye/libvirt,eskultety/libvirt,jardasgit/libvirt,eskultety/libvirt,fabianfreyer/libvirt,rlaager/libvirt,eskultety/libvirt,andreabolognani/libvirt,olafhering/libvirt,taget/libvirt,zippy2/libvirt,elmarco/libvirt,eskultety/libvirt,jardasgit/libvirt,rlaager/libvirt,datto/libvirt,agx/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,agx/libvirt,zippy2/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,crobinso/libvirt,fabianfreyer/libvirt,crobinso/libvirt,andreabolognani/libvirt,agx/libvirt,datto/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,rlaager/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,crobinso/libvirt,shugaoye/libvirt,rlaager/libvirt,andreabolognani/libvirt,agx/libvirt,agx/libvirt,olafhering/libvirt,jardasgit/libvirt,shugaoye/libvirt,taget/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,andreabolognani/libvirt,jfehlig/libvirt,elmarco/libvirt,elmarco/libvirt,taget/libvirt,eskultety/libvirt,nertpinx/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,datto/libvirt,libvirt/libvirt,zippy2/libvirt,zippy2/libvirt,jfehlig/libvirt,elmarco/libvirt,crobinso/libvirt,shugaoye/libvirt,nertpinx/libvirt,andreabolognani/libvirt,olafhering/libvirt