doc: note update of Ruby language packages

lang/ruby24-base 2.4.4
lang/ruby24 2.4.4
lang/ruby25-base 2.5.1
lang/ruby25 2.5.1
lang/ruby23-base 2.3.7
lang/ruby23 2.3.7
lang/ruby22-base 2.2.10
lang/ruby22 2.2.10
devel/ruby-mode 2.5.1
databases/ruby-gdbm 2.4.4
devel/ruby-fiddle 2.4.4
devel/ruby-readline 2.4.4
x11/ruby-tk 2.3.7

(taca)