Fixed typo in README default address

fourstix · fourstix · commit 9cb2a039188f · 2019-06-20T06:57:04.000-04:00
diff --git a/README.rst b/README.rst
@@ -120,10 +120,10 @@ Usage Example
      # Create bus object using the board's I2C port
      i2c = busio.I2C(board.SCL, board.SDA)
 
-     relay = QwiicRelay(i2c)  # default address is 0x20
+     relay = QwiicRelay(i2c)  # default address is 0x18
 
      # For a different address use QwiicRelay(i2c, address)
-     # relay = QwiicRelay(i2c, 0x21)
+     # relay = QwiicRelay(i2c, 0x19)
 
 
 Contributing
