Fixed #23708 -- Corrected mod_wsgi docs reference to nonexistent comment in wsgi.py.

    If multiple Django sites are run in a single mod_wsgi process, all of them

    will use the settings of whichever one happens to run first. This can be

   solved with a minor edit to ``wsgi.py`` (see comment in the file for

   details), or by :ref:`using mod_wsgi daemon mode<daemon-mode>` and ensuring

   that each site runs in its own daemon process.

    solved by changing::

        os.environ.setdefault("DJANGO_SETTINGS_MODULE", "{{ project_name }}.settings")

    in ``wsgi.py``, to::

        os.environ["DJANGO_SETTINGS_MODULE"] = "{{ project_name }}.settings"

    or by :ref:`using mod_wsgi daemon mode<daemon-mode>` and ensuring that each

    site runs in its own daemon process.

Using a virtualenv

==================