add a third way to disable cows (#41866)

* add a third way to disable cows

Cows are great, but there's a third way to disable. I'm sure my RST markup can be improved.

* oops, actually in ansible.cfg

docs/docsite/rst/reference_appendices/faq.rst

@@ -241,7 +241,7 @@ How do I disable cowsay?
 ++++++++++++++++++++++++
 
 If cowsay is installed, Ansible takes it upon itself to make your day happier when running playbooks.  If you decide
-that you would like to work in a professional cow-free environment, you can either uninstall cowsay, or set the :envvar:`ANSIBLE_NOCOWS` environment variable:
+that you would like to work in a professional cow-free environment, you can either uninstall cowsay, set ``nocows=1`` in ansible.cfg, or set the :envvar:`ANSIBLE_NOCOWS` environment variable:
 
 .. code-block:: shell-session