Update pvlib/atmosphere.py

Co-authored-by: Kevin Anderson <[email protected]>

Author: kurt-rhee

pvlib/atmosphere.py

@@ -352,7 +352,7 @@ def rh_from_tdew(temperature, dewpoint, coeff=(6.112, 17.62, 243.12)):
 
     Returns
     -------
-    pd.Series
+    numeric
         Relative humidity as percentage (0.0-100.0)
 
     References