[PATCH] Fix Value.format_string docu for static members argument

[Eli Zaretskii]

> Date: Tue, 24 Nov 2020 19:49:38 +0100
> From: Hannes Domani via Gdb-patches <gdb-patches@sourceware.org>
> 
> The argument is called static_members, not static_fields.
> 
> gdb/doc/ChangeLog:
> 
> 2020-11-24  Hannes Domani  <ssbssa@yahoo.de>
> 
> 	* python.texi: Fix docu for static members argument.

OK, thanks.