[1.8.x] Fixed #24556 -- Added reminder about HTTPS to passwords docs.
[1.8.x] Fixed #24556 -- Added reminder about HTTPS to passwords docs.

Backport of 1119063c69eb4fc091c212e59462f3ec3d5676a4 from master

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