fix(footer): temporarily hide accessibility link in footer until page is ready

src/app/footer/footer.component.html

 <div class="footer" fxLayout="row" fxLayoutAlign="center">
   <div fxLayout="row">
-    <a class="clickable text-align-center" routerLink="/page/accessibilite" i18n>Accessibilité</a>
+    <!--a class="clickable text-align-center" routerLink="/page/accessibilite" i18n>Accessibilité</a-->
     <a class="clickable text-align-center" routerLink="/legal-notice" i18n>Mentions légales</a>
     <a class="clickable text-align-center" routerLink="/newsletter" i18n>Newsletter</a>
     <!-- <a class="clickable text-align-center" routerLink="/sitemap" i18n>Plan du site</a> -->