Fixup changelog entry for #12963 (#13331)

Author: shenanigansd

news/12963.feature.rst

@@ -1,4 +1,4 @@
-- Add a ``--group`` option which allows installation from PEP 735 Dependency
-  Groups. ``--group`` accepts arguments of the form ``group`` or
-  ``path:group``, where the default path is ``pyproject.toml``, and installs
-  the named Dependency Group from the provided ``pyproject.toml`` file.
+Add a ``--group`` option which allows installation from :pep:`735` Dependency
+Groups. ``--group`` accepts arguments of the form ``group`` or
+``path:group``, where the default path is ``pyproject.toml``, and installs
+the named Dependency Group from the provided ``pyproject.toml`` file.