fix docs

RST!!!!

Author: Byron

doc/source/changes.rst

@@ -13,7 +13,7 @@ https://github.com/gitpython-developers/gitpython/milestone/52?closed=1
 
 
 3.1.19 (YANKED)
-======
+===============
 
 * This is the second typed release with a lot of improvements under the hood. 
   * Tracking issue: https://github.com/gitpython-developers/GitPython/issues/1095