docs: aws_role_to_assume in Blocks is unclear

[olespagnon-vdm]

Hi,
The documentation is not very clear on how to use the aws_role_to_assume inside a block.
For instance I'm trying to generate projects. And when specifying aws_role_to_assume inside the block element I can seems to understand what type to use. The docs says it's a string, but then RoleToAssume.

When I submit my PR i get an error trying to parse the digger.yml

Here is the cnofiguration i'm trying to use :

  blocks:
    - block_name: prod
      aws_role_to_assume: 
          aws_role_region: eu-west-3
          state: {{secrets.AWS_STATE_ROLE_ARN}}
          command: {{ secrets.AWS_PROD_ROLE_ARN }}
      open_tofu: true

Could you please provide guidance on what I'm missing to specify roles in Blocks ?