I'm not sure if this is the right place for this, but the documentation links on the website have been broken for several days.
ex. http://www.freenas.org/images/resources/freenas8.3.1/freenas8.3.1_guide.html gives a 500 error
ex. http://www.freenas.org/images/resources/freenas8.3.1/freenas8.3.1_guide.html gives a 500 error