docs: MAINTAINERS: update Mauro's files/paths

Update Mauro's F: (files/paths) entry for docs scripts so that
get_maintainer.pl will report these correctly.

This is copied from Jon's entries for these paths.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251127063125.150441-1-rdunlap@infradead.org>

Author: rddunlap

MAINTAINERS

@@ -7448,6 +7448,8 @@ M:	Mauro Carvalho Chehab <mchehab@kernel.org>
 L:	linux-doc@vger.kernel.org
 S:	Maintained
 F:	Documentation/sphinx/
+F:	scripts/kernel-doc*
+F:	tools/lib/python/*
 F:	tools/docs/
 
 DOCUMENTATION/ITALIAN