Update v0.11.3.rst

Author: echedey-ls

docs/sphinx/source/whatsnew/v0.11.3.rst

@@ -12,6 +12,8 @@ Breaking Changes
 * Users must now provide ModelChain.spectral_model, or the 'no_loss' spectral
   model is assumed. pvlib.modelchain.ModelChain no longer attempts to infer
   the spectral model from PVSystem attributes. (:issue:`2017`, :pull:`2253`)
+* Remove :py:func:`!pvlib.atmosphere.first_solar_spectral_correction`, deprecated in v0.10.0.
+  Use :py:func:`~pvlib.spectrum.spectral_factor_firstsolar` instead. (:issue:`2130`, :pull:`2131`)
 
 Bug fixes
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