[1.8.x] Fixed #24659 -- Clarified docs of smtp.EmailBackend parameters.
[1.8.x] Fixed #24659 -- Clarified docs of smtp.EmailBackend parameters.

Backport of ffe83d16bd0abfa58e4448cf9d48b52cc43544e9 from master

h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,pquentin/django,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,pquentin/django,pquentin/django