Fix dead link for ARIA alert role

[Yordi]

Description & Motivation

While looking at the documentation, I ran into that link that redirected me toward a "DOCUMENT NOT FOUND". This PR is only about updating the link with the appropriate documentation.
Thanks guys, for all the work you offer us.

Additional details

NA

Related issues and pull requests

NA

[SphinxKnight]

Merci pour la correction @Yordi ! une rapide suggestion quant à l'URL en HTTPS plutôt qu'en HTTP.
Vu l'état général de la page, je passerai sur une autre PR pour la refondre/la mettre à jour par rapport à son homologue anglaise.

[github-actions]

Preview URLs

• /fr/docs/Web/Accessibility/ARIA/Roles/alert_role

Flaws (6)

URL: /fr/docs/Web/Accessibility/ARIA/Roles/alert_role
Title: Utilisation du rôle alert
Flaw count: 6

• broken_links:
  • Is currently http:// but can become https://
  • Can't resolve /fr/Accessibilité/ARIA/Techniques_ARIA/Utiliser_le_rôle_alertdialog
  • Can't resolve /fr/Accessibilité/ARIA/Techniques_ARIA/Utiliser_le_rôle_alertdialog
  • Can't resolve /fr/Accessibilité/ARIA/Techniques_ARIA/Utiliser_la_propriété_aria-invalid
  • Is currently http:// but can become https://
• translation_differences:
  • Differences in the important macros (0 in common of 1 possible)

External URLs (1)

URL: /fr/docs/Web/Accessibility/ARIA/Roles/alert_role
Title: Utilisation du rôle alert

• https://www.w3.org/TR/wai-aria/ (1 time) (Note! This may be a new URL 👀)