[RFA/doco] Adjust the normal_stop observer documentation

[Eli Zaretskii]

> Date: Mon, 31 Mar 2003 15:05:56 -0800
> From: Joel Brobecker <brobecker@gnat.com>
> 
> The normal_stop notification has been inserted in a slightly different
> location than the location I had in mind. As a consequence, the
> description for this notification needed to be slightly adjusted. I took
> this opportunity to fix a minor nit (same word repeated twice).
> 
> 2003-03-31  J. Brobecker  <brobecker@gnat.com>
> 
>         * observer.texi (GDB Observers): Adjust the documentation for the
>         normal_stop notification to better describe reality. Fix a minor
>         typo.
> 
> Ok to apply?

Yes, thanks.