mailmap: fixup some more corrupted author fields

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: Timothée Cocault <timothee.cocault@gmail.com>
Cc: fanwenjie <fanwj@mail.ustc.edu.cn>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231106185112.2755262-22-alex.bennee@linaro.org>