Fix typo in notification exclusion tag usage modal

data/interfaces/default/settings.html

@@ -1412,7 +1412,7 @@ available_notification_agents = sorted(notifiers.available_notification_agents()
                         <div>
                             <p class="help-block">All text inside a <strong>music</strong> tag will only be sent when the media item being played back is a music track.</p>
                             <p><strong style="color: #fff;">Example:</strong></p>
-                            <pre>{user} has started playing {title} &lt;music&gt;(Track {episode_num})&lt;/music&gt;</pre>
+                            <pre>{user} has started playing {title} &lt;music&gt;(Track {track_num})&lt;/music&gt;</pre>
                         </div>
                     </div>
                 </div>