Fix Pango markup rendering in bluetooth module tooltip

Co-authored-by: Alexays <13947260+Alexays@users.noreply.github.com>

src/modules/bluetooth.cpp

@@ -264,7 +264,7 @@ auto waybar::modules::Bluetooth::update() -> void {
         device_enumerate_.erase(0, 1);
       }
     }
-    label_.set_tooltip_text(fmt::format(
+    label_.set_tooltip_markup(fmt::format(
         fmt::runtime(tooltip_format), fmt::arg("status", state_),
         fmt::arg("num_connections", connected_devices_.size()),
         fmt::arg("controller_address", cur_controller_ ? cur_controller_->address : "null"),