Auto merge of #2499 - IvanUkhov:typography, r=alexcrichton
authorbors <bors@rust-lang.org>
Fri, 18 Mar 2016 22:02:02 +0000 (15:02 -0700)
committerbors <bors@rust-lang.org>
Fri, 18 Mar 2016 22:02:02 +0000 (15:02 -0700)
doc/manifest: turn the list in Rules into an unordered one

Please see the comments in #2493.


Trivial merge