Fix: use PAPERLESS_URL if set for pw reset emails (#5902)

src/documents/context_processors.py

@@ -7,4 +7,5 @@ def settings(request):
         or django_settings.EMAIL_HOST_USER != "",
         "DISABLE_REGULAR_LOGIN": django_settings.DISABLE_REGULAR_LOGIN,
         "ACCOUNT_ALLOW_SIGNUPS": django_settings.ACCOUNT_ALLOW_SIGNUPS,
+        "domain": getattr(django_settings, "PAPERLESS_URL", request.get_host()),
     }