docs: pt_BR: add translation for kernel development process guides

Add the Brazilian Portuguese (pt_BR) translation for the
'development-process.rst' and '2.process.rst' files under
the 'process/' directory.

The main 'index.rst' file is also updated to include references
to the newly translated documents in the toctree.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260527155350.202569-1-danielmaraboo@gmail.com>

Author: Daniel-Pereira-Linux

Documentation/translations/pt_BR/index.rst

@@ -67,6 +67,7 @@ kernel e sobre como ver seu trabalho integrado.
    :maxdepth: 1
 
    Introdução <process/1.Intro>
+   Guia do Processo de Desenvolvimento <process/development-process>
    Index de documentos do Kernel <process/kernel-docs>
    Regras de licenciamento <process/license-rules>
    Como começar <process/howto>