set license to MIT as in bootloader license

Author: joric

1209/5284/index.md

@@ -2,7 +2,7 @@
 layout: pid
 title: nRFMicro Bootloader
 owner: joric
-license: Unlicense
+license: MIT
 site: https://github.com/adafruit/Adafruit_nRF52_Bootloader/pull/342
 source: https://github.com/joric/nrfmicro
 ---