Auto merge of #2752 - wesleywiser:patch-1, r=alexcrichton
authorbors <bors@rust-lang.org>
Tue, 31 May 2016 03:32:21 +0000 (20:32 -0700)
committerbors <bors@rust-lang.org>
Tue, 31 May 2016 03:32:21 +0000 (20:32 -0700)
Fix example in cargo manpage

Fixes #2731


Trivial merge