md is not rst

Author: caternuson

README.rst

@@ -29,30 +29,31 @@ This is easily achieved by downloading
 Usage Example
 =============
 
-```python
-# This example shows using two TSL2491 light sensors attached to TCA9548A channels 0 and 1.
-# Use with other I2C sensors would be similar.
-import time
-import board
-import busio
-import adafruit_tsl2591
-import adafruit_tca9548a
-
-# Create I2C bus as normal
-i2c = busio.I2C(board.SCL, board.SDA)
-
-# Create the TCA9548A object and give it the I2C bus
-tca = adafruit_tca9548a.TCA9548A(i2c)
-
-# For each sensor, create it using the TCA9548A channel instead of the I2C object
-tsl1 = adafruit_tsl2591.TSL2591(tca[0])
-tsl2 = adafruit_tsl2591.TSL2591(tca[1])
-
-# Loop and profit!
-while True:
-    print(tsl1.lux, tsl2.lux)
-    time.sleep(0.1)
-```
+.. code-block :: python
+
+    # This example shows using two TSL2491 light sensors attached to TCA9548A channels 0 and 1.
+    # Use with other I2C sensors would be similar.
+    import time
+    import board
+    import busio
+    import adafruit_tsl2591
+    import adafruit_tca9548a
+
+    # Create I2C bus as normal
+    i2c = busio.I2C(board.SCL, board.SDA)
+
+    # Create the TCA9548A object and give it the I2C bus
+    tca = adafruit_tca9548a.TCA9548A(i2c)
+
+    # For each sensor, create it using the TCA9548A channel instead of the I2C object
+    tsl1 = adafruit_tsl2591.TSL2591(tca[0])
+    tsl2 = adafruit_tsl2591.TSL2591(tca[1])
+
+    # Loop and profit!
+    while True:
+        print(tsl1.lux, tsl2.lux)
+        time.sleep(0.1)
+
 
 Contributing
 ============