Fix documentation formatting (GoogleCloudPlatform#5797)

Co-authored-by: Joel W. <joelwould@users.noreply.github.com>

Co-authored-by: Joel W. <joelwould@users.noreply.github.com>

mmv1/third_party/terraform/website/docs/r/project_service_identity.html.markdown

@@ -14,10 +14,10 @@ See [Provider Versions](https://terraform.io/docs/providers/google/guides/provid
 
 Generate service identity for a service.
 
-~> **Note**: Once created, this resource cannot be updated or destroyed. These
+~> **Note:** Once created, this resource cannot be updated or destroyed. These
 actions are a no-op.
 
-~> **Note**: This resource can be used to retrieve the emails of the [Google-managed service accounts](https://cloud.google.com/iam/docs/service-agents) 
+~> **Note:** This resource can be used to retrieve the emails of the [Google-managed service accounts](https://cloud.google.com/iam/docs/service-agents) 
 of the APIs that Google has configured with a Service Identity. You can run `gcloud beta services identity create --service SERVICE_NAME.googleapis.com` to
 verify if an API supports this.