firewire: ABI documentation: jujuutils were renamed to linux-firewire-utils

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Documentation/ABI/stable/firewire-cdev

@@ -100,4 +100,4 @@ Description:
 
 Users:		libraw1394
 		libdc1394
-		tools like jujuutils, fwhack, ...
+		tools like linux-firewire-utils, fwhack, ...