[PATCH stable] convert: fix typos in error messages

[Matt Mackall]

On Fri, 2012-02-24 at 19:12 -0200, Wagner Bruna wrote:
> # HG changeset patch
> # User Wagner Bruna <wbruna at softwareexpress.com.br>
> # Date 1330117895 7200
> # Branch stable
> # Node ID afff988bc1a3a32e141da1deaf187ed91958d577
> # Parent  616c2e278f18984dc48b80bc56b55da626130709
> convert: fix typos in error messages

Queued for stable, thanks.

-- 
Mathematics is the supreme nostalgia of our time.