Fix spellings

Author: RealOrangeOne

docs/kit/batteries.md

@@ -60,5 +60,5 @@ When the battery has been almost completely discharged, the Power Board
 will automatically turn off and the LED marked “Power / Flat Battery
 Indicator” in the [diagram](./power-board.md) will
 flash red and green. You should immediately disconnect the battery. Flat
-batteries should be given to a faciliator in exchange for a freshly charged
+batteries should be given to a facilitator in exchange for a freshly charged
 battery.

docs/kit/pi.md

@@ -1,7 +1,7 @@
 # Raspberry Pi
 
 !!! danger
-    Do not reflash or edit the SD card. This will stop your robot working!
+    Do not re-flash or edit the SD card. This will stop your robot working!
 
 ![Raspberry Pi 3B+](../assets/img/kit/pi.jpg){ width="50%" }