selftests/futex: Fix spelling mistake "unitiliazed" -> "uninitialized"

There is a spelling mistake in a fail error message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20250520080657.30726-1-colin.i.king@gmail.com

Author: ColinIanKing

tools/testing/selftests/futex/functional/futex_numa_mpol.c

@@ -180,7 +180,7 @@ int main(int argc, char *argv[])
 	test_futex(futex_ptr, 0);
 
 	if (futex_numa->numa == FUTEX_NO_NODE)
-		ksft_exit_fail_msg("NUMA node is left unitiliazed\n");
+		ksft_exit_fail_msg("NUMA node is left uninitialized\n");
 
 	ksft_print_msg("Memory too small\n");
 	test_futex(futex_ptr + mem_size - 4, 1);