[libadwaita] toast: Fix missing bracket in an example

[Alexander Mikhaylenko <alexm src gnome org>]

commit 248f8444db3f8399b0b1bbb20cffebb3a6272652
Author: Celso Tavares <celsotavares pm me>
Date:   Fri Jun 10 21:51:19 2022 +0000

    toast: Fix missing bracket in an example

 src/adw-toast.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/adw-toast.c b/src/adw-toast.c
index ad89bad2..9855b5d9 100644
--- a/src/adw-toast.c
+++ b/src/adw-toast.c
@@ -33,7 +33,7 @@
  * follows:
  *
  * ```c
- * adw_toast_overlay_add_toast (overlay, adw_toast_new (_("Simple Toast"));
+ * adw_toast_overlay_add_toast (overlay, adw_toast_new (_("Simple Toast")));
  * ```
  *
  * <picture>