doc: added comment for https://stackoverflow.com/a/75471488/3156607

Author: deki

aws-serverless-java-container-core/src/main/java/com/amazonaws/serverless/proxy/internal/servlet/AwsHttpServletRequest.java

@@ -145,6 +145,7 @@ public HttpSession getSession(boolean b) {
     @Override
     public HttpSession getSession() {
         log.debug("Trying to access session. Lambda functions are stateless and should not rely on the session");
+        // as per Servlet spec this method should create a session if none exists, so we should change it to getSession(true) in the future
         return this.session;
     }