Update distros in README file

Author: andclt

README.md

@@ -17,7 +17,7 @@ The Python Runtime Interface Client package currently supports Python versions:
 ### Creating a Docker Image for Lambda with the Runtime Interface Client
 First step is to choose the base image to be used. The supported Linux OS distributions are:
 
- - Amazon Linux 2
+ - Amazon Linux (2 and 2023)
  - Alpine
  - CentOS
  - Debian