Update README.md

Author: juergenfl

knowledge-content/opentelemetry-demo/README.md

@@ -9,7 +9,7 @@ The following prerequisites are needed:
 1. Ensure to have an [OCI account](https://signup.cloud.oracle.com).
 2. In Application Performance Monitoring (APM) service, [create an APM domain.](https://docs.oracle.com/iaas/application-performance-monitoring/doc/create-apm-domain.html)
 3. Have the [Data Upload Endpoint URL and the private data key](https://docs.oracle.com/en-us/iaas/application-performance-monitoring/doc/obtain-data-upload-endpoint-and-data-keys.html#GUID-912EA36F-4E58-4954-B9C2-4E9A9BADDAE9) of that domain available.
-4. Have a Kubernetes Cluster available, either locally, in OCI or at other cloud vendors.
+4. Have a Kubernetes Cluster available, either locally, in OCI or at other cloud vendors, and provide access to it using <samp>kubectl</samp>.
 
 ## Deploy the Demo App
 We will start by creating a dedicated namespace for the demo app: