Update URL to libtorrent settings

src/gui/advancedsettings.cpp

@@ -383,7 +383,7 @@ void AdvancedSettings::loadAdvancedSettings()
     static_cast<QLabel *>(cellWidget(QBITTORRENT_HEADER, PROPERTY))->setAlignment(Qt::AlignCenter | Qt::AlignVCenter);
 
     auto *labelLibtorrentLink = new QLabel(
-        makeLink(QLatin1String("https://www.libtorrent.org/reference.html")
+        makeLink(QLatin1String("https://www.libtorrent.org/reference-Settings.html")
                  , tr("Open documentation"))
         , this);
     labelLibtorrentLink->setOpenExternalLinks(true);

src/webui/www/private/views/preferences.html

@@ -950,7 +950,7 @@
         </table>
     </fieldset>
     <fieldset class="settings">
-        <legend>QBT_TR(libtorrent Section)QBT_TR[CONTEXT=OptionsDialog]&nbsp;(<a href="https://www.libtorrent.org/reference.html" target="_blank">QBT_TR(Open documentation)QBT_TR[CONTEXT=HttpServer]</a>)</legend>
+        <legend>QBT_TR(libtorrent Section)QBT_TR[CONTEXT=OptionsDialog]&nbsp;(<a href="https://www.libtorrent.org/reference-Settings.html" target="_blank">QBT_TR(Open documentation)QBT_TR[CONTEXT=HttpServer]</a>)</legend>
         <table>
             <tr>
                 <td>