Spec issue: Differentiate between `List` and `Array`

[lolaodelola]

This solution returns a list instead of an array so that it can be used later.

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Preview | Diff

[lolaodelola]

The deploy is failing with

  # Failed
  node -e 'require("@actions/core").setFailed("Failed. See details above.")'
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
  env:
    PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
    PYTHONUSERBASE: /home/runner/work/_actions/w3c/spec-prod/v2/python_modules

I'm unsure where this error is coming from or what's causing it. When I build the HTML locally, I'm error free.