README updated

Author: shamimice03

README.md

@@ -6,9 +6,9 @@ module "acm" {
 
     source = "github.com/shamimice03/terraform-aws-acm-route53"
 
-    domain_name = "webapp.kubecloud.net"
+    domain_name = "webapp.example.com"
     validation_method = "DNS"
-    hosted_zone_name = "kubecloud.net"
+    hosted_zone_name = "example.com"
     private_zone = false
     allow_record_overwrite = true
     ttl = 60