Slight documentation edit

lib/devise/passkeys/model.rb

@@ -9,7 +9,7 @@ module PasskeyAuthenticatable
       # This is a callback that is called right after a successful passkey authentication.
       #
       # By default, it is a no-op, but you can override it in your model for any custom behavior
-      # (such as notifying users of a new login).
+      # (such as notifying the user of a new login).
       # @param passkey [String] the passkey that was used for authentication
       def after_passkey_authentication(passkey:); end
     end