PEP 820: Add discussion links

Author: encukou

peps/pep-0820.rst

@@ -1,12 +1,12 @@
 PEP: 820
 Title: PySlot: Unified slot system for the C API
 Author: Petr Viktorin <encukou@gmail.com>
-Discussions-To: Pending
+Discussions-To: https://discuss.python.org/t/105552
 Status: Draft
 Type: Standards Track
 Created: 19-Dec-2025
 Python-Version: 3.15
-Post-History: Pending
+Post-History: `06-Jan-2026 <https://discuss.python.org/t/105552>`__
 
 
 .. highlight:: c