Documentation regarding use of AWS pseudo parameters natively could be more helpful

[phaakma]

Hi.

Thanks for the comment re this plugin being deprecated, but I struggled to implement without it based on the documentation available in this repo and from the Serverless Framework documentation.

It wasn't until I stumbled on this link from one of the Serverless Forum pages that I realised that not only do you need to replace the '#' with '$', you seem to need to add '!Sub' at the beginning.

ie.
Resource: 'arn:aws:lambda:#{AWS::Region}:#{AWS::AccountId}:function:function-on-error'
becomes:
Resource: !Sub 'arn:aws:lambda:${AWS::Region}:${AWS::AccountId}:function:function-on-error'

https://forum.serverless.com/t/pseudo-parameters-with-variables/13119

I think it would be very helpful for others if this little tip could be added to the documentation page here.