README.md in ddtrace-0.50.0

- old
+ new

@@ -42,19 +42,19 @@
 
  Alternatively, set `DD_DEMO_ENV_PROCESS` to run a particular process by default when `bin/run` is run.
 
 ##### Features
 
-Set `DD_DEMO_ENV_PROCESS` to a comma-delimited list of any of the following values to activate the feature:
+Set `DD_DEMO_ENV_FEATURES` to a comma-delimited list of any of the following values to activate the feature:
 
  - `tracing`: Tracing instrumentation
  - `profiling`: Profiling (NOTE: Must also set `DD_PROFILING_ENABLED` to match.)
  - `debug`: Enable diagnostic debug mode
  - `analytics`: Enable trace analytics
  - `runtime_metrics`: Enable runtime metrics
  - `pprof_to_file`: Dump profiling pprof to file instead of agent.
 
-e.g. `DD_DEMO_ENV_PROCESS=tracing,profiling`
+e.g. `DD_DEMO_ENV_FEATURES=tracing,profiling`
 
 ##### Routes
 
 ```sh
 # Health check