[libadwaita/wip/exalm/view-stack-object] view-stack: Add missing </object> in docs

[Alexander Mikhaylenko <alexm src gnome org>]

commit 73ae3111c65472a7ae635bf44caa22dbc58375b0
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Jan 20 14:53:49 2022 +0500

    view-stack: Add missing </object> in docs
    
    Fixes https://gitlab.gnome.org/GNOME/libadwaita/-/issues/404

 src/adw-view-stack.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/adw-view-stack.c b/src/adw-view-stack.c
index 8d178cc1..1d41ae9b 100644
--- a/src/adw-view-stack.c
+++ b/src/adw-view-stack.c
@@ -65,6 +65,7 @@
  *         </property>
  *       </object>
  *     </child>
+ *   </object>
  * ```
  *
  * ## CSS nodes