Transcription : correction de l'id d'aria-control (#766)

layouts/partials/commons/transcription.html

@@ -3,8 +3,8 @@
   {{ $id := printf "block-%d-transcription" $block_index}}
   {{ $title := .title | default ( i18n "commons.accessibility.transcription" ) }}
   <div class="transcription">
-    <details id="{{$id}}">
-      <summary aria-controls="#{{ $id }}" aria-expanded="false">{{ $title }}</summary>
+    <details id="{{- $id -}}">
+      <summary aria-controls="{{- $id -}}" aria-expanded="false">{{ $title }}</summary>
       {{- $transcription := partial "PrepareHTML" .transcription -}}
       {{ safeHTML $transcription }}
     </details>