Update motlp instructions for ECH Tech Preview (#483)

* Update motlp instructions for ECH Tech Preview

* Update motlp.md

---------

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

Author: mlunadia

docs/reference/motlp.md

@@ -61,15 +61,15 @@ To retrieve your {{motlp}} endpoint address, follow these steps:
 
 ::::{applies-switch}
 :::{applies-item} serverless:
-1. In {{ecloud}}, select **Manage** next to your project.
+1. In {{ecloud}}, select the project name and then select **Manage project**.
 2. Locate the **Connection alias** and select **Edit**.
 3. Copy the Managed OTLP endpoint URL.
 :::
 
 :::{applies-item} ess:
 {applies_to}`stack: preview 9.2`
-1. In {{ecloud}}, select **Manage** next to your project.
-3. Select **Copy endpoint** to copy the Managed OTLP endpoint URL.
+1. In {{ecloud}}, select **Add data** and then select **Application: OpenTelemetry**
+2. Copy the Managed OTLP endpoint URL from `OTEL_EXPORTER_OTLP_ENDPOINT`. You can use this endpoint for both OpenTelemetry collectors and SDKs.
 :::
 ::::