docs: Remove spaces on lines that are empty.

docs/wipy/quickref.rst

@@ -62,7 +62,7 @@ Timer ``id``'s take values from 0 to 3.::
     tim = Timer(0, mode=Timer.PERIODIC)
     tim_a = tim.channel(Timer.A, freq=1000)
     tim_a.freq(5) # 5 Hz
-    
+
     p_out = Pin('GP2', mode=Pin.OUT)
     tim_a.irq(trigger=Timer.TIMEOUT, handler=lambda t: p_out.toggle())
 
@@ -75,7 +75,7 @@ See :ref:`machine.Pin <machine.Pin>` and :ref:`machine.Timer <machine.Timer>`. :
 
     # timer 1 in PWM mode and width must be 16 buts
     tim = Timer(1, mode=Timer.PWM, width=16)
-    
+
     # enable channel A @1KHz with a 50.55% duty cycle
     tim_a = tim.channel(Timer.A, freq=1000, duty_cycle=5055)
 

docs/wipy/tutorial/repl.rst

@@ -51,7 +51,7 @@ Open a terminal and run::
 or::
 
     $ screen /dev/tty.usbmodem* 115200
-    
+
 When you are finished and want to exit ``screen``, type CTRL-A CTRL-\\. If your keyboard does not have a \\-key (i.e. you need an obscure combination for \\ like ALT-SHIFT-7) you can remap the ``quit`` command:
 
 - create ``~/.screenrc``