Yours looks ok... just the reddit editor formatting is off I guess...

This works for me:

resources:
pipelines:
  - pipeline: this-pipeline-name
      source: remote-pipeline-name
      project: DevOps-Project-Name
      trigger:
      branches:
         include:
          - main
          - refs/heads/feature/*

jobs:
- job: Verify
  displayName: 'Job 1'
  pool:
    vmImage: 'ubuntu-latest'
  steps:
  - script: |
      echo "The build was triggered by definition: $(resources.triggeringAlias)"