UI: fix fcc.html when using QRC

selfdrive/ui/qt/offroad/settings.cc

@@ -147,7 +147,7 @@ DevicePanel::DevicePanel(QWidget* parent) : ListWidget(parent) {
   if (Hardware::TICI()) {
     regulatoryBtn = new ButtonControl("Regulatory", "VIEW", "");
     connect(regulatoryBtn, &ButtonControl::clicked, [=]() {
-      const std::string txt = util::read_file(ASSET_PATH.toStdString() + "/offroad/fcc.html");
+      const std::string txt = util::read_file("../assets/offroad/fcc.html");
       RichTextDialog::alert(QString::fromStdString(txt), this);
     });
   }