Add cookstyle to the list of utilities in DK
Add cookstyle to the list of utilities in DK

We have a nice doc that explains it now. Lets link it

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>
chef/chef-dk,chef/chef-dk,chef/chef-dk