Improve readme
Make it clear what keys are LIVEKIT_KEYS
@@ -91,7 +91,7 @@ APIwLeah7g4fuLYDYAJeaKsSE: 8nTlwISkb-63DPP7OH4e.nw.J44JjicvZDiz8J59EoQ+
### Starting the server
-In development mode, LiveKit has no external dependencies. You can start LiveKit by passing it the keys it should use
+In development mode, LiveKit has no external dependencies. You can start LiveKit by passing it the API keys it should use
in `LIVEKIT_KEYS`. LiveKit could also use a [config file](config-sample.yaml) or config environment
variable `LIVEKIT_CONFIG`
