Fix mistake in readme

Author: DarcyRaynerDD

README.md

@@ -125,7 +125,7 @@ Datadog needs to be able to read headers from the incoming Lambda event. To do t
 We provide a swap in replacement handler, with zero required code changes.
 
 1. Set the environment variable `DD_LAMBDA_HANDLER` to your regular handler location, eg. `myfunc.handler`.
-2. If using the layer, set your handler to `datadog_lambda.handler.handler`.
+2. Set your handler to `datadog_lambda.handler.handler`.
 
 ### Manual Wrap