apparmor: fix the audit type table

The audit type table is missing a comma so that KILLED comes out as
KILLEDAUTO.

Signed-off-by: John Johansen <[e-mail]>
Acked-by: Steve Beattie <[e-mail]>

security/apparmor/audit.c

···
 	"HINT",
 	"STATUS",
 	"ERROR",
-	"KILLED"
+	"KILLED",
 	"AUTO"
 };