Fix mistake

go/tests/iterativefactorial_test/main.go

@@ -16,7 +16,7 @@ func iterativeFactorial(nb int) int {
 	if nb == 0 {
 		return 1
 	}
-	return nb * IterativeFactorial(nb-1)
+	return nb * iterativeFactorial(nb-1)
 }
 
 func main() {

go/tests/iterativepower_test/main.go

@@ -24,6 +24,6 @@ func main() {
 		lib.Challenge("IterativePower", student.IterativePower, iterativePower, nb, power)
 		i++
 	}
-	lib.Challenge("IterativePower", student.IterativePower, correct.IterativePower, 0, 0)
-	lib.Challenge("IterativePower", student.IterativePower, correct.IterativePower, 0, 1)
+	lib.Challenge("IterativePower", student.IterativePower, iterativePower, 0, 0)
+	lib.Challenge("IterativePower", student.IterativePower, iterativePower, 0, 1)
 }