Fix markdownlint CI failure by normalizing root-guide markdown formatting

[Copilot]

The markdownlint GitHub Actions job failed due to markdown style violations in changed documentation files, primarily MD060/table-column-style and MD007/ul-indent. This update applies minimal, file-scoped formatting corrections so the existing workflow passes without changing CI logic.

• Root cause addressed

  • Corrected markdownlint violations in the root-guide docs selected by the workflow’s changed-file targeting.
  • Focused on table pipe spacing/style and unordered list indentation issues reported in the failing run.

• Scope of change

  • Updated only affected Markdown files under docs/root-guides/ (no workflow, app, or script behavior changes).
  • Changes are formatting-only and preserve document content.

• Representative formatting adjustment

  -| Category      | Example                          | Risk   |
  +| Category | Example | Risk |
   | ------------- | -------------------------------- | ------ |
  -| Bug Fix       | "Fix failing test_chat.py"       | Medium |
  +| Bug Fix | "Fix failing test_chat.py" | Medium |

[Copilot]

@Bryan-Roe Unfortunately, I hit an error while trying to use the custom Copilot setup steps configured for this repository and had to close this PR. The error I am seeing is:

no `copilot-setup-steps` job found in your `copilot-setup-steps.yml` workflow file. Please ensure you have a single job named `copilot-setup-steps`. For more details, see https://gh.io/copilot/actions-setup-steps

Once you or someone with the necessary access fixes the problem, please unassign and then reassign issue #0 to me and I'll retry. Thanks!

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[Copilot]

@Bryan-Roe Thanks for sending me some feedback. Unfortunately, I hit an error while trying to use the custom Copilot setup steps configured for this repository. The error I am seeing is:

no `copilot-setup-steps` job found in your `copilot-setup-steps.yml` workflow file. Please ensure you have a single job named `copilot-setup-steps`. For more details, see https://gh.io/copilot/actions-setup-steps

Once you or someone with the necessary access fixes the problem, please let me know in a comment and I'll try again. Thanks!

[Copilot]

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