Bugfix in example

Shouldn't the aws_route53_record in the example should use the "dev" zone_id?

website/source/docs/providers/aws/r/route53_zone.html.markdown

@@ -36,7 +36,7 @@ resource "aws_route53_zone" "dev" {
 }
 
 resource "aws_route53_record" "dev-ns" {
-    zone_id = "${aws_route53_zone.main.zone_id}"
+    zone_id = "${aws_route53_zone.dev.zone_id}"
     name = "dev.example.com"
     type = "NS"
     ttl = "30"
@@ -79,4 +79,4 @@ Route53 Zones can be imported using the `zone id`, e.g.
 
 ```
 $ terraform import aws_route53_zone.myzone Z1D633PJN98FT9
-```
+```