* ext/socket/basicsocket.c (bsock_do_not_reverse_lookup),
(bsock_do_not_reverse_lookup_set): [DOC] swap examples. the code
setting the flag is for the setter.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51193 b2dd03c8-39d4-4d8f-98ff-823fe69b080e