InputTransformations in EventBridge rule

serverless.yml

EventRule:
  Type: AWS::Events::Rule
  Properties:
  Description: 'PayslipUploadedEventRule'
  EventBusName: 'HREventBus'
  EventPattern:
    account:
      - !Sub '${AWS::AccountId}'
    source:
      - 'payslip.uploaded'
  Targets:
    - Arn: !GetAtt PDFGenQueue.Arn
      Id: 'PDFGenQueue'
      SqsParameters:
        MessageGroupId: 'PayslipUploaded'
      InputTransformer:
        InputPathsMap:
          'detail': '$.detail'
          'detail-type': '$.detail-type'
          'source': '$.source'
          'account': '$.account'
          'region': '$.region'
        InputTemplate: |
          {
            "detail" : <detail>,
            "detail-type" : "<detail-type>",
            "source": "<source>",
            "account" : "<account>",
            "region" : "<region>"
          }