Fixed code block in readme

Author: evaherrada

README.rst

@@ -121,6 +121,7 @@ Once this is done, define the keyboard layout and initialize the :class:`Ducky`
 Now, set up a loop which will run a line of the script every time `loop` is called.
 
 .. code-block:: python
+
     result = True
     while result is not False:
         result = duck.loop()