MAINTAINERS: Add a missing entry to SPICE

Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
Message-Id: <20181125205000.10324-18-philmd@redhat.com>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

MAINTAINERS

@@ -1772,6 +1772,7 @@ F: ui/spice-*.c
 F: audio/spiceaudio.c
 F: hw/display/qxl*
 F: qapi/ui.json
+F: docs/spice-port-fqdn.txt
 
 Graphics
 M: Gerd Hoffmann <kraxel@redhat.com>