[remote protocol][doc] PATCH: document remote protocol extensions for multi-process debugging

[Eli Zaretskii]

> Date: Fri, 29 Aug 2008 12:33:51 -0400
> From: Sandra Loosemore <sandra@codesourcery.com>
> 
> This patch is a formal write-up of the proposal to extend the remote protocol 
> syntax that Pedro originally posted here:
> 
> http://sourceware.org/ml/gdb/2008-05/msg00166.html

Thanks, and sorry for a long delay in reviewing this.

> +Refer to @ref{thread-id syntax} for the format of the @var{thread-id}
                                  ^
You want a comma after the right brace of the cross-reference.

Otherwise, the patch is okay with me.