Try again to fix header validation

Author: hoodmane

peps/pep-0776.rst

@@ -7,7 +7,7 @@ Status: Draft
 Type: Standards Track
 Created: 18-Mar-2025
 Python-Version: 3.14
-Post-History: `28-Mar-2025 <https://discuss.python.org/t/86276>`__ `18-Mar-2025 <https://discuss.python.org/t/84996>`__
+Post-History: `28-Mar-2025 <https://discuss.python.org/t/86276>`__, `18-Mar-2025 <https://discuss.python.org/t/84996>`__
 
 Abstract
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