Merge pull request lithops-cloud#1086 from gfinol/patch-1

Update README.md

runtime/aws_lambda/README.md

@@ -55,7 +55,7 @@ so that they can be used in the Lambda code.
 
 To build your own runtime, first install [Docker CE](https://docs.docker.com/get-docker/) in your client machine.
 
-Update the [template Dockerfile](Dockerfile.python38) that better fits to your requirements with your required system packages and Python modules.
+Update the [template Dockerfile](Dockerfile) that better fits to your requirements with your required system packages and Python modules.
 You can add a container layer (`RUN ...`) to install additional Python modules using `pip` or system libraries using `apt`, or even change Python version to a older/newer one.
 
 If you plan to use the **ARM64** architecture, you should consider creating a new dockerfile with an arm image from [https://gallery.ecr.aws/lambda/python](https://gallery.ecr.aws/lambda/python), in the tab "image tags". For example, you should start the dockerfile with the line `FROM public.ecr.aws/lambda/python:3.9-arm64`