docs/sp_SP: Add process code-of-conduct.rst translation

Translate the following document into Spanish:

- process/code-of-conduct.rst

Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Link: https://lore.kernel.org/r/20221204000109.17224-1-bilbao@vt.edu


Signed-off-by: Jonathan Corbet <corbet@lwn.net>