chore(cat-gateway): explain how to enable telemetry

saibatizoku · saibatizoku · commit a9c834c2d3cc · 2025-12-09T18:53:07.000-06:00
diff --git a/catalyst-gateway/demo/README.md b/catalyst-gateway/demo/README.md
@@ -2,6 +2,11 @@
 
 The intention for this demonstration is to show how to enable Telemetry for Catalyst Gateway using the OpenTelemetry.
 
+## TLDR
+
+Set the `TELEMETRY_ENABLED` env variable to _any_ value, and telemetry will be enabled.
+Remove the env var for simple logging to stdout.
+
 ## Steps to run the demo
 
 * Build the docker containers:
