RFA: fix documentation for file -readnow

[Eli Zaretskii]

> From: Tom Tromey <tromey@redhat.com>
> Date: Thu, 04 Feb 2010 11:23:58 -0700
> 
> This patch fixes PR cli/8830.
> 
> The bug is that a user got confused by the documentation, which reads:
> 
> `symbol-file FILENAME [ -readnow ]'
> `file FILENAME [ -readnow ]'
>    [...]
> 
> It turns out that file and symbol-file only accept -readnow as the first
> argument.
> 
> This patch fixes the documentation to reflect the code.
> 
> Ok?

Yes, of course.  Thanks.