harmonize container with fr-container for all users header

app/views/users/dossiers/brouillon.html.haml

@@ -6,7 +6,7 @@
 
 .dossier-container
   .dossier-header.sub-header
-    .container
+    .fr-container
       = render partial: "shared/dossiers/header", locals: { dossier: @dossier }
 
   = render partial: "shared/dossiers/edit", locals: { dossier: @dossier }

app/views/users/dossiers/index.html.haml

@@ -7,7 +7,7 @@
   = render partial: "users/dossiers/index_footer"
 
 .dossiers-headers.sub-header
-  .container
+  .fr-container
     %h1.page-title.fr-h2= t('views.users.dossiers.index.dossiers')
     - if current_user.dossiers.count > 2
       #search-2.fr-search-bar.fr-search-bar--lg

app/views/users/dossiers/show/_header.html.haml

@@ -1,5 +1,5 @@
 .sub-header
-  .container
+  .fr-container
     %h1
       = dossier.procedure.libelle
       = status_badge(dossier.state, 'super')