doc: fix changelog (#370)

Author: blueyed

docs/changelog.rst

@@ -38,11 +38,11 @@ Compatibility
   database access was prevented on the cursor level. To be safer and prevent
   more cases, it is now prevented at the connection level. If you previously
   had tests which interacted with the databases without a database cursor, you
-  will need to mark them with the :func:`pytest.mark.django_db` marker or request the
-  `db` fixture.
+  will need to mark them with the :func:`pytest.mark.django_db` marker or
+  request the `db` fixture.
 
 * The previously undocumented internal fixtures ``_django_db_setup``,
-  ``_django_cursor_wrapper`` has been removed in favour of the new public
+  ``_django_cursor_wrapper`` have been removed in favour of the new public
   fixtures. If you previously relied on these internal fixtures, you must
   update your code. See :ref:`advanced-database-configuration` for more
   information on the new fixtures and example use cases.