gtksourceview3: fix a typo in requirements version
gtksourceview3: fix a typo in requirements version

3.0.0 or later ->
3.4.2 or later
  ^ ^

kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2