kernel-parameters.txt : watchdog.txt should be wdt.txt

Documentation/watchdog/watchdog.txt does not exist, it is Documentation/watchdog/wdt.txt

Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index efdb42f..a326487 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1922,7 +1922,7 @@
 			See header of drivers/scsi/wd7000.c.
 
 	wdt=		[WDT] Watchdog
-			See Documentation/watchdog/watchdog.txt.
+			See Documentation/watchdog/wdt.txt.
 
 	xd=		[HW,XT] Original XT pre-IDE (RLL encoded) disks.
 	xd_geo=		See header of drivers/block/xd.c.