Update README.md

Author: gpalmz

azure/activity_logs_monitoring/README.md

@@ -1 +1,5 @@
-# See our documentation: [Send Azure Logs to Datadog](https://docs.datadoghq.com/logs/guide/azure-logging-guide/).
+# Datadog-Azure function
+
+The Datadog-Azure function is used to forward Azure logs to Datadog, including Activity and Diagnostic logs from EventHub.
+
+## See our documentation: [Send Azure Logs to Datadog](https://docs.datadoghq.com/logs/guide/azure-logging-guide/).