Add pep 776 discussion thread to post-history

Author: hoodmane

peps/pep-0783.rst

@@ -7,7 +7,7 @@ Status: Draft
 Type: Standards Track
 Topic: Packaging
 Created: 28-Mar-2025
-Post-History:
+Post-History: `18-Mar-2025 <https://discuss.python.org/t/84996>`__
 
 Abstract
 ========
@@ -21,8 +21,6 @@ use in JavaScript runtimes, including browsers and Node.js. The Rust language
 also maintains an Emscripten target.
 
 
-
-
 Motivation
 ==========