Updated FAQ Keymap (markdown)

FAQ-Keymap.md

@@ -218,4 +218,4 @@ Dual-role key: https://en.wikipedia.org/wiki/Modifier_key#Dual-role_keys
 
 
 ## Eject on Mac OSX
-It is actually F20, at least HHKB use it for Eject key(Fn+f).
+It is actually F20, at least HHKB uses it for Eject key(Fn+f).