typo in GTK+ documentation

["dine" <2500418497 qq com>]

I'm writing to report some errors on webpage https://developer.gnome.org/gtk3/3.0/gtk-question-index.html

(1) in section 1.1, there is a link that displays as "tutorials" and links to http://www.gtk.org/documentation , however, that is a dead link. This url http://www.gtk.org/documentation.php works.

(2) several occurrences of "ISO-8859-1" are spelt "IS0-8859-1"