Fmt the code.

Author: guangfanqu

example/main.tf

@@ -1,11 +1,11 @@
 module "instance" {
-  source = "../"
-  password = "Your password"
-  data_node_spec = "elasticsearch.sn2ne.large"
-  data_node_amount = "2"
+  source              = "../"
+  password            = "Your password"
+  data_node_spec      = "elasticsearch.sn2ne.large"
+  data_node_amount    = "2"
   data_node_disk_size = "20"
   data_node_disk_type = "cloud_ssd"
-  es_version = "5.5.3_with_X-Pack"
-  vswitch_id = "vswitch id"
-  master_node_spec = "elasticsearch.sn2ne.large"
+  es_version          = "5.5.3_with_X-Pack"
+  vswitch_id          = "vswitch id"
+  master_node_spec    = "elasticsearch.sn2ne.large"
 }

example/outputs.tf

@@ -1,3 +1,3 @@
 output "elasticsearch_ids" {
   value = "${module.instance.elasticsearch_ids}"
-}
+}

variables.tf

@@ -50,12 +50,12 @@ variable "kibana_whitelist" {
 
 variable "master_node_spec" {
   description = "The master node specifications of the Elasticsearch instance."
-  default = ""
+  default     = ""
 }
 
 variable "description" {
   description = "The description of the Elasticsearch instance."
-  default = ""
+  default     = ""
 }
 
 variable "number_of_instance" {