[doc] gdbint: Fix .gdbinit vs. new gdb-gdb.gdb

[Eli Zaretskii]

> Date: Tue, 07 Aug 2012 19:35:49 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: gdb-patches@sourceware.org
> 
> > Date: Tue, 7 Aug 2012 16:54:36 +0200
> > From: Jan Kratochvil <jan.kratochvil@redhat.com>
> > 
> > Hi Eli,
> > 
> > I have noticed after all the auto-load changes this paragraph of gdbinit is
> > inaccurate now.
> 
> Thanks, this is OK.

I meant, your changes are OK.  Sorry for being ambiguous.