Auto merge of #2883 - wuranbo:patch-1, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 16 Jul 2016 16:41:31 +0000 (09:41 -0700)
committerGitHub <noreply@github.com>
Sat, 16 Jul 2016 16:41:31 +0000 (09:41 -0700)
doc: typo


Trivial merge