Update README.md

Logging service - review changes

Author: NicolaCimitile

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

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 # Logging
 
+The Oracle Cloud Infrastructure Logging service is a highly scalable and fully managed single pane of glass for all the logs in your tenancy. Logging provides access to logs from Oracle Cloud Infrastructure resources. These logs include critical diagnostic information that describes how resources are performing and being accessed.
+
+# Table of Contents
+
+1. [Team Publications](#team-publications)
+2. [Useful Links](#useful-links)
+
+
 # Team Publications
 
 - [Use Auditd logs in OCI with Logging Service](https://learnoci.cloud/use-auditd-logs-in-oci-with-logging-service-5caa13719315?sk=497fb416850a753be1997577f68b6d3d)
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 - [OKE logging using OCI Logging](https://learnoci.cloud/oke-log-collection-using-oci-logging-3f1e732928b3?source=friends_link&sk=d077521b8306b55c3f84cd0712a771e7)
 - [Stream OCI Logs to Splunk](https://learnoci.cloud/stream-oci-logs-to-splunk-v9-1-c71c93e470fe?sk=8a7c3f6201bfcd847a83d36247eddfa7)
 
+# Useful Links
+- [Logging](https://docs.oracle.com/en-us/iaas/Content/Logging/home.htm)
+
+
 # License
 
 Copyright (c) 2023 Oracle and/or its affiliates.