Some documentation cosmetics fixes

Author: jeremad

website/docs/r/project_share_group.html.markdown

@@ -14,9 +14,9 @@ This resource allows you to share a project with a group
 
 ```hcl
 resource "gitlab_project_share_group" "test" {
-project_id = "12345"
-group_id = 1337
-access_level = "guest"
+  project_id = "12345"
+  group_id = 1337
+  access_level = "guest"
 }
 ```
 

website/docs/r/service_github.html.markdown

@@ -22,7 +22,7 @@ resource "gitlab_project" "awesome_project" {
 }
 
 resource "gitlab_service_github" "github" {
-  project        = "${gitlab_project.awesome_project.id}"
+  project        = gitlab_project.awesome_project.id
   token          = "REDACTED"
   repository_url = "https://github.com/terraform-providers/terraform-provider-gitlab"
 }

website/docs/r/service_jira.html.markdown

@@ -20,7 +20,7 @@ resource "gitlab_project" "awesome_project" {
 }
 
 resource "gitlab_service_jira" "jira" {
-  project  = "${gitlab_project.awesome_project.id}"
+  project  = gitlab_project.awesome_project.id
   url      = "https://jira.example.com"
   username = "user"
   password = "mypass"

website/docs/r/service_slack.html.markdown

@@ -20,7 +20,7 @@ resource "gitlab_project" "awesome_project" {
 }
 
 resource "gitlab_service_slack" "slack" {
-  project                    = "${gitlab_project.awesome_project.id}"
+  project                    = gitlab_project.awesome_project.id
   webhook                    = "https://webhook.com"
   username                   = "myuser"
   push_events                = true