Fix check workflow failure by formatting _layouts/bib.liquid

[Copilot]

The check GitHub Actions job failed because Prettier detected formatting drift in _layouts/bib.liquid. This PR applies the minimal template formatting update required for the existing Prettier workflow to pass.

• Root cause

  • npx prettier . --check flagged _layouts/bib.liquid as non-compliant.

• Change

  • Applied Prettier-consistent formatting to the self-author emphasis block in _layouts/bib.liquid.
  • No template logic, data flow, or rendering behavior was changed.

• Illustrative diff

  -          <em><strong>
  -            {{- author.first }}
  -            {{ author_last_html -}}
  -          </strong></em>
  +          <em
  +            ><strong>
  +              {{- author.first }}
  +              {{ author_last_html -}}
  +            </strong></em
  +          >

[Tiny-Snow]

Fix Prettier formatting in bib layout