Fix typo in README

Author: VIPQualityPost

ayab-shield/README.md

@@ -3,7 +3,7 @@
 
 # AYAB Shield
 This is the original design for the AYAB hardware. It is a board in a shield form factor intended to be used with Arduino Uno type development boards. It should be compatible with Uno R2, R3, and R4. 
-This shield can be built in a variety of configurations that allow for compatiblity with Brother KH 270, 900, 910, 930, 940, 950, 965.
+This shield can be built in a variety of configurations that allow for compatibility with Brother KH 270, 900, 910, 930, 940, 950, 965.
 
 The files required to order/build the board can be found in the Releases on the sidebar, but you can also find workflow artifacts for unvalidated hardware based on the state of the repo.