Update docs/sphinx/source/whatsnew/v0.11.1.rst

Co-authored-by: Kevin Anderson <[email protected]>

Author: RDaxini

docs/sphinx/source/whatsnew/v0.11.1.rst

@@ -42,7 +42,7 @@ Documentation
   (:issue:`2107`, :pull:`2114`)
 
 * Added gallery example demonstrating the application of
-  :py:func:`average_photon_energy`. (:issue:`2194`, :pull:`2206`)
+  :py:func:`~pvlib.spectrum.average_photon_energy`. (:issue:`2194`, :pull:`2206`)
 
 * Added gallery example on calculating cell temperature for
   floating PV. (:pull:`2110`)