update env example

Author: networkandcode

strands-examples/strands-newrelic-demo/.env.example

@@ -1,6 +1,6 @@
 AWS_ACCESS_KEY_ID=""
 AWS_SECRET_ACCESS_KEY=""
 AWS_DEFAULT_REGION=us-west-2
-LANGFUSE_PUBLIC_KEY="pk-lf-.."
-LANGFUSE_SECRET_KEY="sk-lf-.."
-OTEL_EXPORTER_OTLP_ENDPOINT = "https://cloud.langfuse.com/api/public/otel"
+OTEL_EXPORTER_OTLP_ENDPOINT="https://otlp.nr-data.net"
+OTEL_EXPORTER_OTLP_HEADERS=api-key=
+OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf