bug#38023: Update win32 faq: emacs works on windows 10

[Cecilio Pardo]

>> -Windows 98 and Windows NT 4.0 through to Windows 8.1.  The Windows
>> +Windows 98 and Windows NT 4.0 through to Windows 10.  The Windows
>
> I'd rather we said something that didn't require us to go back and fix
> it every year.  Basically, all the Windows versions of the NT family
> are supported, and will be supported in the future.

Maybe something like this?

diff --git a/doc/misc/efaq-w32.texi b/doc/misc/efaq-w32.texi
index cdd01e47f0..4dddfeeb16 100644
--- a/doc/misc/efaq-w32.texi
+++ b/doc/misc/efaq-w32.texi
@@ -126,7 +126,7 @@ Which versions of Windows
 @cindex supported versions of Windows
 
 Emacs @value{EMACSVER} is known to run on all versions of Windows from
-Windows 98 and Windows NT 4.0 through to Windows 8.1.  The Windows
+Windows 98 and Windows NT 4.0 through current ones.  The Windows
 port is built using the Win32 API and supports most features of the X
 version, including variable width fonts, images and tooltips.