Documentation: Fix typo in SubmitChecklist.

Signed-off-by: NJames Bowes <jbowes@dangerouslyinc.com>
Signed-off-by: NAdrian Bunk <bunk@kernel.org>

Documentation/SubmitChecklist

@@ -67,7 +67,7 @@ kernel patches.
 20: Check that it all passes `make headers_check'.
 
 21: Has been checked with injection of at least slab and page-allocation
-    fauilures.  See Documentation/fault-injection/.
+    failures.  See Documentation/fault-injection/.
 
     If the new code is substantial, addition of subsystem-specific fault
     injection might be appropriate.