Update README.md

README.md

@@ -17,7 +17,7 @@ Other demos:
 * [Call a function before tab switch](https://jsfiddle.net/bt5dhqtf/105/)
 * [Complete form example](https://jsfiddle.net/CristiJ/bt5dhqtf/286/) integrated with [vue-form-generator](https://github.com/icebob/vue-form-generator)
 * [Vue router integration](https://jsfiddle.net/bt5dhqtf/267/) You can place a `router-view` inside the wizard and have a separate page per tab. A `route` prop must be passed to the tabs you want to handle certain tabs
-* [Async validation with error message](https://jsfiddle.net/CristiJ/bt5dhqtf/298//) `before-change` prop can accept a promise that is resolved with `true` which will execute the promise before switching to another step/tab (NOTE: This feature is not present in the npm package yet)
+* [Async validation with error message](https://jsfiddle.net/CristiJ/bt5dhqtf/298/) `before-change` prop can accept a promise that is resolved with `true` which will execute the promise before switching to another step/tab (NOTE: This feature is not present in the npm package yet)
 
 # Usage