update pt-br translation

Translated by: Eduardo Tompson Pereira <eduardo.tompson itelefonica.com.br>
Reviewed by: Bremm <bremm vtnc.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@384948 13f79535-47bb-0310-9956-ffa450edef68