Docs: incorrect action name in GitHub Actions example

Bug

The landing page documents the GitHub Actions integration as:

steps:
  - uses: worktree-io/action@v1

However, the actual action repository is worktree-io/comment-action, not worktree-io/action.

This causes the workflow to fail with:

Unable to resolve action worktree-io/action, repository not found

The docs should reference the correct action:

steps:
  - uses: worktree-io/comment-action@v1

A workspace is ready for this issue.

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Narrow no-hardcoded-urls ESLint override to URL constant files only

Fix action name: worktree-io/action → worktree-io/comment-action