There is no independent CRI containerd plugin for new containerd,
the related documentation should be updated too.
Fixes: #4605
Signed-off-by: liubin <liubin0329@gmail.com>
Removed all TOCs now that GitHub auto-generates them.
Also updated the documentation requirements doc removing the requirement
to add a TOC.
Fixes: #2022.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>