Change BTC BOX doc url (#4070)
Change BTC BOX doc url (#4070)

* Change BTC BOX doc url

* Remove SMS

Co-Authored-By: Kai Michael Poppe <f072e9ac5b893f6fd971dea5d9a1623ffbde46c3@users.noreply.github.com>

* Update doc URL

Co-Authored-By: Kai Michael Poppe <f072e9ac5b893f6fd971dea5d9a1623ffbde46c3@users.noreply.github.com>

jdavis/twofactorauth,vgarmash/twofactorauth,rj175/twofactorauth,rj175/twofactorauth,Jawshy/twofactorauth,jdavis/twofactorauth,Jawshy/twofactorauth,Jawshy/twofactorauth,vgarmash/twofactorauth,jdavis/twofactorauth,Jawshy/twofactorauth,rj175/twofactorauth,vgarmash/twofactorauth