PEP 735: Add a canonical spec link (#4209)

Co-authored-by: Adam Turner <[email protected]>

Author: sirosen

peps/pep-0735.rst

@@ -11,6 +11,8 @@ Created: 20-Nov-2023
 Post-History: `14-Nov-2023 <https://discuss.python.org/t/29684>`__, `20-Nov-2023 <https://discuss.python.org/t/39233>`__
 Resolution: `10-Oct-2024 <https://discuss.python.org/t/39233/312>`__
 
+.. canonical-pypa-spec:: :ref:`packaging:dependency-groups`
+
 
 Abstract
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