This patch adds a new .po file containing the spanish translation of the NanoBSD article.
The corresponding bug in bugzilla is https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203402 .
It can be tested using the following steps:
- Apply the diff to the documentation tree.
- Change the working directory to /es_ES.ISO8859-1/articles/nanobsd
- make tran
- make
And then viewing the generated html file in a web browser.