PEP 851: Add link to Discourse thread (#5202)

Author: StanFromIreland

peps/pep-0851.rst

@@ -1,12 +1,13 @@
 PEP: 851
 Title: Add list.discard()
 Author: Stan Ulbrych <stan@python.org>
-Discussions-To: Pending
+Discussions-To: https://discuss.python.org/t/pep-851-add-list-discard/109701
 Status: Draft
 Type: Standards Track
 Created: 27-Oct-2026
 Python-Version: 3.16
-Post-History: `12-Oct-2025 <https://discuss.python.org/t/add-list-discard-and-deque-discard/104330>`__
+Post-History: `12-Oct-2025 <https://discuss.python.org/t/add-list-discard-and-deque-discard/104330>`__,
+              `27-Oct-2026 <https://discuss.python.org/t/pep-851-add-list-discard/109701>`__,
 
 
 Abstract
@@ -163,7 +164,8 @@ Footnotes
 
 .. [#search] Using `Victor Stinner's scripts
    <https://hugovk.dev/blog/2022/how-to-search-5000-python-projects/>`__,
-   modified to match across lines, with the regular expressions::
+   modified to match across lines (`vstinner/misc#24
+   <https://github.com/vstinner/misc/pull/24>`__), with the regular expressions::
 
        if ([\w.\[\]]+) in ([\w.\[\]]+):\n\s+\2\.remove\(\1\)