Fix spelling (#920)

Fix spelling

Author: xs5871

boards/nullbitsco/tidbit/README.md

@@ -1,6 +1,6 @@
 Keyboard mapping for the [nullbits tidbit](https://nullbits.co/tidbit/).
 
-Copy `kb.py` and `main.py` to your top level circuitpython folder beside the kmk folder.
+Copy `kb.py` and `main.py` to your top level CircuitPython folder beside the kmk folder.
 Edit the key mapping in `main.py` to match your build,
 for example the number and location of encoders and double-size keys.
 

docs/en/config_and_keymap.md

@@ -73,7 +73,7 @@ keyboard.keymap = [[KC.A, KC.B]]
 ```
 
 - The keymap contains a flat list of `Key` objects for each layer of the keyboard.
-  The list of keys in each layer are stored as a single list that folllows the 
+  The list of keys in each layer are stored as a single list that follows the 
   grid of row and column pins in the keyboard matrix.  This list starts with keys 
   in the first row from left to right, then the second row, and so on.  
   The row x column matrix structure doesn't appear explicitly

util/aspell.en.pws

@@ -1,4 +1,4 @@
-personal_ws-1.1 en 347 
+personal_ws-1.1 en 348 
 ADNS
 AMS
 ANAVI
@@ -305,6 +305,7 @@ nano
 nc
 neopixel
 noncommercially
+nullbits
 num
 numpad
 oneshot