Docs feedback: Use inputs with downstream pipelines documentation bug

Problem to solve

Documentation for creating multi-project downstream pipelines with inputs is incorrect. Example provided in doc actually creates a child-parent pipeline in the same project.

Tested it on v17.10.1-ee . Looks like multi-project part was added for Gitlab 17.8

Pipeline example that triggers child pipeline instead of multi-project pipeline:

Run:
  resource_group: production
  stage: trigger
  trigger:
    strategy: depend
    include:
      - project: project/to/trigger
        file: ".gitlab-ci.yml"
        inputs:
          input_name: input_value
  rules:
    - if: '$CI_PIPELINE_SOURCE == "web"'
      when: manual
    - if: "$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH"
      changes:
        - folder/**/*
      when: manual

Proposal

I do not have a proposal as I am not sure if triggering multi-project pipelines with inputs is even possible at the moment.

If it is not possible yet then restoring this article to 17.7 version might be a good thing to do.