docs/psoc6/quickref.rst: Fixed code parser timing.

Signed-off-by: enriquezgarc <enriquezgarcia.external@infineon.com>

docs/psoc6/quickref.rst

@@ -50,7 +50,9 @@ The :mod:`machine` module::
  machine.freq() # get the current frequency of the CPU
 
 ::
+
  from machine import Bitstream
+ 
  timing = [1000, 7000, 5000, 2500] #timing (high_time_0, low_time_0, high_time_1, low_time_1)in ns
  buf = bytearray([0xAB]) #buffer data 
  bitstream('P13_6', 0, timing, buf) # bitstrem buffer data with timing through pin P13_6