LDAP password changing instructions differences

I was helping someone change their LDAP password today and was following the instructions on https://db.torproject.org/password.html -- it didn't work, the gateway would complain about the formatting (sorry I don't have the complaint, it was not on my machine).

Somehow, I noticed that https://db.torproject.org/doc-mail.html has a different invocation, so we tried that one, and it worked!

The one on /password.html (which did not work) says: echo "Please change my Tor password" | gpg --clearsign | mail chpasswd@db.torproject.org

The one on /doc-mail.html (which did work) says: echo "Please change my Tor password" | gpg --armor --sign | mail chpasswd@db.torproject.org

I am unsure why one of them worked, and the other didn't, but clearly its a bit weird that there are two different instructions here, and maybe they should be made to be the same?