grammar -- periods before/after units(?)

Author: RDaxini

pvlib/spectrum/irradiance.py

@@ -189,7 +189,7 @@ def average_photon_energy(spectra):
     ----------
     spectra : pandas.Series or pandas.DataFrame
 
-        Spectral irradiance, must be positive. [Wm⁻²nm⁻¹]
+        Spectral irradiance, must be positive [Wm⁻²nm⁻¹].
         See :term:`spectra <spectra, spectra_components>`.
 
         A single spectrum must be a :py:class:`pandas.Series` with wavelength