fix wrong tf resource

Author: eistrati

README.md

@@ -9,7 +9,7 @@ corresponding terraform configurations:
 | Cloud Function | google_cloudfunctions_function | https://github.com/TerraHubCorp/demo-terraform-automation-gcp/blob/master/google_function/.terrahub.yml#L24 |
 | Cloud Storage | google_storage_bucket | https://github.com/TerraHubCorp/demo-terraform-automation-gcp/blob/master/google_storage/.terrahub.yml#L7 |
 | Static Website | google_storage_bucket_object | https://github.com/TerraHubCorp/demo-terraform-automation-gcp/blob/master/google_function/.terrahub.yml#L19 |
-| IAM Policy | iam_member_object_viewer | https://github.com/TerraHubCorp/demo-terraform-automation-gcp/blob/master/google_storage/.terrahub.yml#L7 |
+| IAM Policy | google_storage_bucket_iam_member | https://github.com/TerraHubCorp/demo-terraform-automation-gcp/blob/master/google_storage/.terrahub.yml#L7 |
 
 Follow below instructions to try this out in your own Google Cloud account.