Added missing ticket links in docs/releases/5.2.8.txt.

Author: jacobtylerwalls

docs/releases/5.2.8.txt

@@ -32,7 +32,7 @@ Bugfixes
 
 * Fixed a bug in Django 5.2 where ``QuerySet.first()`` and ``QuerySet.last()``
   raised an error on querysets performing aggregation that selected all fields
-  of a composite primary key.
+  of a composite primary key (:ticket:`36648`).
 
 * Fixed a bug in Django 5.2 where proxy models having a ``CompositePrimaryKey``
-  incorrectly raised a ``models.E042`` system check error.
+  incorrectly raised a ``models.E042`` system check error (:ticket:`36704`).