docs: need to update new container instructions since discovering glob

[alexanderankin]

you no longer need to add your README.rst file to a list to fix the docs build for a new container. you still need to do this for poetry, but docs should reflect the the new modules/index.rst file whenever that becomes a reality:

Community Modules
=================

..
    glob:
    https://stackoverflow.com/a/44572883/4971476

.. toctree::
    :glob:

    */README