C: Multimedia - Need clarification on needed description - Besoin de clarification sur les descriptions

[quidampepin]

The guidance on https://design.canada.ca/common-design-patterns/multimedia.html should clarify that multimedia items need Descriptive Transcript (not just transcript).

Les directives de https://conception.canada.ca/configurations-conception-communes/multimedia.html devraient clarifier la nécessité d'utiliser des "Transcriptions descriptives" (et non simplement des transcriptions.