[Feature] Improve docs related to "files"

[SimenHolmestad]

Is this feature missing in the latest version?

• I'm using the latest release

Is your feature request related to a problem? Please describe.

The syntax for "files" is different here than when using "on" and "paths" with github workflows.

With github workflows, you would typically write:

on:
  pull_request:
    paths:
      - "path1/**"
      - "path2/**"

But with this library, the syntax is:

      - name: Check for changed integration test files related to last remote commit
        id: changed-files-related-to-integration-tests
        uses: tj-actions/changed-files@v29.0.7
        with:
          files: |
            path1/**
            path2/**

Note that this syntax does not use quotes.

I did a direct copy without removing the quotes (only removing the hyphens) and used several hours to debug that the problem was missing quotes.

The only feedback i got was that the check-integration-test-files-changed.outputs.any_changed was set to an empty string, which was not very helpful.

Describe the solution you'd like?

Maybe add to the docs somewhere that the "files" should not be quoted.

Describe alternatives you've considered?

It would also be possible to give an error message or warning when this happens, but changing the docs is probably enough.

Anything else?

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

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