Documentation Show the contents of the 'common_vars.yaml' file and format reasoning

[DevopsMercenary]

Describe the Documentation

In the documentation for https://terragrunt.gruntwork.io/docs/features/locals/ there is a reference to a file named common_vars.yaml

Documentation File: https://github.com/gruntwork-io/terragrunt/blob/master/docs/_docs/02_features/locals.md

The documentation doesn't show what the contents of the common_vars.yaml file. Additionally there is added complexity to understanding the documentation because a YAML file is used.

After some reflection I assume the file might include the following 'common vars'

account_id="123456789012"
role_arn="arn:aws:iam::account:role/role-name-with-path"

or if I YAML-ized it

account_id:  123456789012
role_arn: "arn:aws:iam::account:role/role-name-with-path"

it's really handy to show all of the pieces for any example.