MAINTAINERS: Fix file pattern for MEN Z069 watchdog driver

The file name is menz69_wdt.c, not menz069_wdt.c.
Reported-by: Joe Perches <joe@perches.com>
Cc: Joe Perches <joe@perches.com>
Cc: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

MAINTAINERS

@@ -9495,7 +9495,7 @@ MEN Z069 WATCHDOG DRIVER
 M:	Johannes Thumshirn <jth@kernel.org>
 L:	linux-watchdog@vger.kernel.org
 S:	Maintained
-F:	drivers/watchdog/menz069_wdt.c
+F:	drivers/watchdog/menz69_wdt.c
 
 MESON AO CEC DRIVER FOR AMLOGIC SOCS
 M:	Neil Armstrong <narmstrong@baylibre.com>