docs: Fix a few typos

[timgates42]

There are small typos in:

• docs/source/settings.rst
• testproject/testapp/tests/test_password_reset_confirm.py

Fixes:

• Should read message rather than messsage.
• Should read endpoint rather than enpoint.

Semi-automated pull request generated by https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md