Update docs/sphinx/source/whatsnew/v0.16.0.rst

Co-authored-by: Adam R. Jensen <39184289+AdamRJensen@users.noreply.github.com>

Author: cbcrespo

docs/sphinx/source/whatsnew/v0.16.0.rst

@@ -6,9 +6,9 @@ v0.16.0
 
 Breaking Changes
 ~~~~~~~~~~~~~~~~
-* Remove empty horizon component from the output of
-:py:func:`pvlib.irradiance.haydavies` when ``return_components=True``.
-(:pull:`2788`)
+* Remove empty ``poa_horizon`` component from the output of
+  :py:func:`pvlib.irradiance.haydavies` when ``return_components=True``.
+  (:pull:`2788`)
 
 
 Deprecations