Update README.md

Using Pulumi to create OCI resource

Author: NicolaCimitile

manageability-and-operations/observability-and-manageability/README.md

@@ -31,6 +31,7 @@ Reviewed: 13/11/2023
 - [Supercharge your Oracle Enterprise Manager Cloud Control 13.5 management, by using the REST API calls](https://medium.com/@eugenesimos/supercharge-your-oracle-enterprise-manager-cloud-control-13-5-d264e7371ec9)
 - [ServiceNow integration with OCI using secrets stored in OCI Vault to create incidents](https://karthicin.medium.com/servicenow-integration-with-oracle-cloud-d3d7a1c6f68a)
 - [How to enable OCI Observability Services on Exadata Cloud@Customer](https://medium.com/@erikasciunzi/how-to-enable-oci-observability-services-on-exadata-cloud-customer-9501dcaa356e)
+- [Using Pulumi to create OCI resource](https://karthicin.medium.com/using-pulumi-to-create-oci-resource-1e685a7d25fb)
 
 ## Cloud Coaching Clinics (Videos)