fix changelog

Author: Byron

Diff for: doc/source/changes.rst

@@ -2,19 +2,12 @@
 Changelog
 =========
 
-3.1.28
-======
-
-- Fix a vulenerability that could cause great slowdowns when encountering long remote path names
-  when pulling/fetching.
-
-See the following for all changes.
-https://github.com/gitpython-developers/gitpython/milestone/58?closed=1
-
 3.1.27
 ======
 
 - Reduced startup time due to optimized imports.
+- Fix a vulenerability that could cause great slowdowns when encountering long remote path names
+  when pulling/fetching.
 
 See the following for all changes.
 https://github.com/gitpython-developers/gitpython/milestone/57?closed=1