Fixed typo

Author: Vincens Mink

README.md

@@ -44,6 +44,6 @@ the `function(response) {do-something-with-response}` will fire,
 
 ###Advanced use case:
 Same beginning as before but,
-* once your application figures out the authentication is OK, call: `authService.loginConfirmed([data], [updateConfigFunc)`,
+* once your application figures out the authentication is OK, call: `authService.loginConfirmed([data], [updateConfigFunc])`,
 * your initial failed request will now be retried but you can supply additional data to observers who are listening for `event:auth-loginConfirmed`, and all your queued http requests will be recalculated by your `updateConfigFunc(httpConfig)` function. This is very usefull if you need to update the headers with new credentials and/or tokens from your successful login.