Change Dict to dict

Author: cbcrespo

pvlib/irradiance.py

@@ -631,15 +631,15 @@ def isotropic(surface_tilt, dhi, return_components=False):
 
     Returns
     -------
-    numeric, Dict, or DataFrame
+    numeric, dict, or DataFrame
         Return type controlled by ``return_components`` argument.
         If ``False``, ``sky_diffuse`` is returned.
         If ``True``, ``diffuse_components`` is returned.
 
     sky_diffuse : numeric
         The sky diffuse component of the solar radiation. [Wm⁻²]
 
-    diffuse_components : Dict (array input) or DataFrame (Series input)
+    diffuse_components : dict (array input) or DataFrame (Series input)
         Keys/columns are:
             * poa_sky_diffuse: Total sky diffuse
             * poa_isotropic