Update project_api_key.html.markdown (#1044)

* Update project_api_key.html.markdown

Remove spare bracket

* Update project_api_key.html.markdown

Indent

Author: ThomasVictoria

website/docs/r/project_api_key.html.markdown

@@ -17,9 +17,8 @@ description: |-
 ```terraform
 resource "mongodbatlas_project_api_key" "test" {
   description   = "key-name"
-  project_id        = "<PROJECT_ID>"
-  role_names = ["GROUP_OWNER"]
-  }
+  project_id    = "<PROJECT_ID>"
+  role_names    = ["GROUP_OWNER"]
 }
 ```