fix: use pango markup for consistent formatting in format and tooltip-format

src/modules/sway/mode.cpp

@@ -44,7 +44,7 @@ auto Mode::update() -> void {
   } else {
     label_.set_markup(fmt::format(fmt::runtime(format_), mode_));
     if (tooltipEnabled()) {
-      label_.set_tooltip_text(mode_);
+      label_.set_tooltip_markup(mode_);
     }
     event_box_.show();
   }

src/modules/sway/window.cpp

@@ -99,7 +99,7 @@ auto Window::update() -> void {
                   fmt::arg("shell", shell_), fmt::arg("marks", marks_)),
       config_["rewrite"]));
   if (tooltipEnabled()) {
-    label_.set_tooltip_text(window_);
+    label_.set_tooltip_markup(window_);
   }
 
   updateAppIcon();