Correct markdown for google_compute_instance_group and attach to index

Author: billf

website/source/docs/providers/google/r/compute_instance_group.html.markdown

@@ -15,24 +15,24 @@ and [API](https://cloud.google.com/compute/docs/reference/latest/instanceGroups)
 
 ## Example Usage
 
-Empty instance group
+### Empty instance group
 ```
-resource "google_compute_instance_group" "foobar" {
+resource "google_compute_instance_group" "test" {
 	name = "terraform-test"
 	description = "Terraform test instance group"
 	zone = "us-central1-a"
 }
 ```
 
-With instances and named ports
+### With instances and named ports
 ```
-resource "google_compute_instance_group" "foobar" {
-	name = "terraform-test"
+resource "google_compute_instance_group" "webservers" {
+	name = "terraform-webservers"
 	description = "Terraform test instance group"
-	instances = [ 
-	              "${google_compute_instance.test.self_link}", 
-	              "${google_compute_instance.test2.self_link}"
-	            ]
+	instances = [
+		"${google_compute_instance.test.self_link}",
+		"${google_compute_instance.test2.self_link}"
+	]
 	named_port {
 		name = "http"
 		port = "8080"
@@ -70,15 +70,12 @@ Supported characters include lowercase letters, numbers, and hyphens.
 The `named_port` block supports:
 
 * `name` - The name which the port will be mapped to.
-
 * `port` - The port number to map the name to.
 
 ## Attributes Reference
 
 The following attributes are exported:
 
 * `network` - The network the instance group is in.
-
 * `size` - The number of instances in the group.
-
 * `self_link` - The URL of the created resource.

website/source/layouts/google.erb

@@ -57,6 +57,10 @@
 			<a href="/docs/providers/google/r/compute_instance.html">google_compute_instance</a>
 			</li>
 
+			<li<%= sidebar_current("docs-google-compute-instance-group") %>>
+			<a href="/docs/providers/google/r/compute_instance_group.html">google_compute_instance_group</a>
+			</li>
+
 			<li<%= sidebar_current("docs-google-compute-instance-group-manager") %>>
 			<a href="/docs/providers/google/r/compute_instance_group_manager.html">google_compute_instance_group_manager</a>
 			</li>