fix README.rst - indentation

Author: jerryneedell

README.rst

@@ -50,7 +50,7 @@ To set it to 1000000 use :
 .. code-block:: python# Initialze RFM radio
 .. code-block:: python
     # Initialze RFM radio
-     rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, RADIO_FREQ_MHZ,baudrate=1000000)
+    rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, RADIO_FREQ_MHZ,baudrate=1000000)
 
 
 Contributing