Fix day placeholder in release notes, that I forgot to replace

Mingun · Mingun · commit 646ce4b866ee · 2025-11-14T22:34:16.000+05:00
diff --git a/Changelog.md b/Changelog.md
@@ -29,7 +29,7 @@
 [#913]: https://github.com/tafia/quick-xml/pull/913
 
 
-## 0.38.4 -- 2025-11-??
+## 0.38.4 -- 2025-11-11
 
 ### New Features
 
