update pointer alignment rule

src/main.c

@@ -13,7 +13,7 @@ static void stop(void) {
 }
 
 // entry-point of the application
-int main(int argc, char** argv) {
+int main(int argc, char **argv) {
 	(void)argc, (void)argv;
 	// register stop as exit function
 	atexit(stop);