add(ui/ux): keep episode numbers out of the audible query

static/index.html

@@ -191,6 +191,7 @@
         <dialog id="quick-dialog">
           <h3>Suchen &amp; Anfragen</h3>
           <p class="muted mono" id="quick-file"></p>
+          <p class="muted" id="quick-episode"></p>
           <form id="quick-search-form" class="bar">
             <input id="quick-q" placeholder="Titel/Serie suchen…" required />
             <button type="submit">Suchen</button>