Add missing new line in docstring for hashlib.new

The missing line between the method description and the list of
parameters leads to broken formatting in the docs. It needs to be
present for the list of parameters to be correctly formatted.

Author: nicolasff

adafruit_hashlib/__init__.py

@@ -40,6 +40,7 @@
 
 def new(algo, data=b""):
     """Creates a new hashlib object.
+
     :param str algo: Name of the desired algorithm.
     :param str data: First parameter.
     """