Update docs/sphinx/source/whatsnew/v0.12.1.rst

Co-authored-by: Echedey Luis <80125792+echedey-ls@users.noreply.github.com>

Author: kandersolar

docs/sphinx/source/whatsnew/v0.12.1.rst

@@ -11,7 +11,7 @@ Breaking Changes
 Deprecations
 ~~~~~~~~~~~~
 * The following ``parse_`` functions in :py:mod:`pvlib.iotools` are deprecated,
-  with the corresponding ``read_`` functions taking their place: (:issue:`2444`, :pull:``)
+  with the corresponding ``read_`` functions taking their place: (:issue:`2444`, :pull:`2458`)
 
   - :py:func:`~pvlib.iotools.parse_psm3`
   - :py:func:`~pvlib.iotools.parse_cams`