Fixed incorrect const values

examples/array/array.q

@@ -1,5 +1,5 @@
+import io
 import mem
-import sys
 
 main() {
 	length := 5
@@ -9,6 +9,6 @@ main() {
 	address[2] = 'l'
 	address[3] = 'l'
 	address[4] = 'o'
-	sys.write(1, address, length)
+	io.write(1, address)
 	mem.free(address)
 }