Minor contrib.texi update

[Jeff Law]

On 11/23/11 04:16, Gerald Pfeifer wrote:
> On Mon, 21 Nov 2011, Jeff Law wrote:
>>> Just mind the long line
>> Do we wrap earlier in the texi file (first line is 79chars I think)?
>> Or are you referring to an output file?
>
> I fail to find the reference now, but usually try to wrap things
> such that a patch (which adds "+ " or "- ") still fits with wrapping,
> or ideally a quoted patch (so ">  + " or ">  - "), so around 76.
>
> Not a big deal, though.
I wrapped it before the checkin.  Good point about how it appears in a 
patch -- I've wrapped for that reason in the past as well.

jeff