[Minor] Update README.md for multiple versions of Python.

Author: mirelap-amazon

sample-demo-lambda-app/README.md

@@ -1,6 +1,9 @@
 # Amazon CodeGuru Profiler Python Demo Lambda Application
 
-Here's a sample code you can run in a Python Lambda in your account. Further instructions will follow.
+Here's a sample code you can run in a Python Lambda in your account. Further instructions will follow soon.
 
-To setup Amazon CodeGuru Profiler, enable `Code Profiling` for your Lambda's configuration in the `Monitoring and operation tools` tab: https://docs.aws.amazon.com/codeguru/latest/profiler-ug/setting-up-short.html#setting-up-step-2
+To enable Amazon CodeGuru Profiler, follow these instructions:
+* For Python 3.8: Enable `Code Profiling` for your Lambda's configuration in the `Monitoring and operation tools` tab: https://docs.aws.amazon.com/codeguru/latest/profiler-ug/setting-up-short.html#setting-up-step-2
+
+* For Python 3.6+: Follow these instructions for enabling Profiler https://docs.aws.amazon.com/codeguru/latest/profiler-ug/python-lambda.html