fixup! boards/common/ada-nrf52-bootl: refactor and enhance documentation

Author: crasbe

boards/common/adafruit-nrf52-bootloader/doc.md

@@ -26,12 +26,13 @@ such as the J-Link has to be used. Please refer to @ref ada-nrf52-reflashing.
 
 ## Flashing the Board with RIOT
 
-The board is flashed using its on-board UF2 boot loader by default.
-The boot loader will present a mass storage device that has to be mounted so
-`uf2conv.py` can find it. If you have an auto-mounter installed this will happen
-automatically.
+The board is flashed using its on-board UF2 bootloader by default.
+The bootloader will present a mass storage device that has to be mounted so
+the RIOT buildsystem can find it. If you have an auto-mounter installed this
+will happen automatically.
 
-The rest of the process is automated in the usual way with e.g. `BOARD=feather-nrf52840`.
+The rest of the process is automated in the usual way with e.g.
+`BOARD=feather-nrf52840`.
 
 Example with `hello-world` application:
 ```