Update configuring_django.rst

Revisited doc

docs/configuring_django.rst

@@ -87,8 +87,8 @@ This can be done from your project's ``conftest.py`` file::
 ``DEBUG`` setting during the test run
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-By default, django test runner behavior is to force DEBUG setting to False. So does the ``pytest-django``.
-But sometimes, especially for functional tests, you might want to avoid this, to debug why certain page does not work.
+Django's test runner forces the DEBUG setting to be False by default, and so does ``pytest-django``.
+But sometimes (e.g. for functional tests) you might want to avoid this, to better debug why a certain page does not work as expected.
 
 Command Line Option::