update spectrl2.py and spectrum irradiance.py

Author: RDaxini

pvlib/spectrum/irradiance.py

@@ -190,7 +190,7 @@ def average_photon_energy(spectra):
     spectra : pandas.Series or pandas.DataFrame
 
         Spectral irradiance, must be positive. [Wm⁻²nm⁻¹]
-        See :term:`spectra, spectra_components<spectra>`.
+        See :term:`spectra <spectra, spectra_components>`.
 
         A single spectrum must be a :py:class:`pandas.Series` with wavelength
         [nm] as the index, while multiple spectra must be rows in a

pvlib/spectrum/spectrl2.py

@@ -232,7 +232,7 @@ def spectrl2(apparent_zenith, aoi, surface_tilt, ground_albedo,
         122, each array has shape (122, N) where N is the length of the
         input ``apparent_zenith``.  All values are spectral irradiance
         with units Wm⁻²nm⁻¹, except for `wavelength`, which is in nanometers.
-        See :term:`spectra, spectra_components<spectra_components>`.
+        See :term:`spectra_components <spectra, spectra_components>`.
 
         * wavelength
         * dni_extra