Update code.py

Author: TheKitty

CircuitPython_IBM_XT_Keyboard_QTPy_RP2040/code.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2022 Jeff Epler for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+# IBM Keyboard to USB Adapter
 import array
 import board
 import rp2pio