Fix docstrings

Author: cbcrespo

pvlib/irradiance.py

@@ -623,7 +623,7 @@ def isotropic(surface_tilt, dhi, return_components=False):
     dhi : numeric
         Diffuse horizontal irradiance, must be >=0. See :term:`dhi`.
 
-    return_components : bool, default `False`
+    return_components : bool, default ``False``
         If ``False``, ``sky_diffuse`` is returned.
         If ``True``, ``diffuse_components`` is returned.
         For this model, ``return_components`` does not add more information,
@@ -635,7 +635,7 @@ def isotropic(surface_tilt, dhi, return_components=False):
         The sky diffuse component of the solar radiation. [Wm⁻²]
 
     diffuse_components : Dict (array input) or DataFrame (Series input)
-    (if ``return_components`` is ``True``)
+        (if ``return_components`` is ``True``)
         Keys/columns are:
             * poa_sky_diffuse: Total sky diffuse
             * poa_isotropic