Relink Portuguese translation

The Portuguese translation is kept up-to-date.

Here's the translation list from the index page of www.openbsd.org:
de fr lt nl

Please link the Portuguese translation to the index page of www.openbsd.org.

A capitalization error is found on http://www.openbsd.org/translation.html:
To make the learning of non-english speakers easier...

The word English is not capitalized.