Auto merge of #3906 - waywardmonkeys:typo-fixes, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 8 Apr 2017 19:53:03 +0000 (19:53 +0000)
committerbors <bors@rust-lang.org>
Sat, 8 Apr 2017 19:53:03 +0000 (19:53 +0000)
Fix typos.


Trivial merge