Update pvlib/spectrum/mismatch.py

Co-authored-by: Echedey Luis <80125792+echedey-ls@users.noreply.github.com>

Author: jesuspolo

pvlib/spectrum/mismatch.py

@@ -717,6 +717,7 @@ def spectral_factor_polo(precipitable_water, airmass_absolute, aod500, aoi,
                          albedo=0.2):
     """
     Estimate the spectral mismatch for BIPV application in vertical facades.
+
     Parameters
     ----------
     precipitable_water : numeric