Add Changelog to the project URLs

Author: Perlence

setup.cfg

@@ -3,8 +3,9 @@ name = AutoHotkey.py
 url = https://github.com/Perlence/AutoHotkey.py
 project_urls =
     Documentation = https://ahkpy.readthedocs.io/en/latest/
-    Code = https://github.com/Perlence/AutoHotkey.py
-    Issue tracker = https://github.com/Perlence/AutoHotkey.py/issues
+    Changelog = https://github.com/Perlence/AutoHotkey.py/blob/master/CHANGES.md
+    Source Code = https://github.com/Perlence/AutoHotkey.py
+    Issue Tracker = https://github.com/Perlence/AutoHotkey.py/issues
 license = BSD-3-Clause
 author = Sviatoslav Abakumov
 author_email = [email protected]