Update pvlib/atmosphere.py

Co-authored-by: Adam R. Jensen <[email protected]>

Author: kurt-rhee

pvlib/atmosphere.py

@@ -393,7 +393,7 @@ def tdew_from_rh(
     Returns
     -------
     numeric
-        Dewpoint temperature in degrees Celsius
+        Dewpoint temperature.. [°C]
 
     References
     ----------