Update docs/recipes/ember.md

Co-authored-by: David Khourshid <[email protected]>

docs/recipes/ember.md

@@ -143,7 +143,7 @@ export default class extends Component {
 </this.CustomMachine>
 ```
 
-Prior to [ember 4.5](https://blog.emberjs.com/ember-4-5-released), it is recommended to also have the [plain functions polyfill](https://github.com/ember-polyfills/ember-functions-as-helper-polyfill) 
+If using Ember versions older than [Ember 4.5](https://blog.emberjs.com/ember-4-5-released), it is recommended to also have the [plain functions polyfill](https://github.com/ember-polyfills/ember-functions-as-helper-polyfill) 
 installed so that you can use `state.matches` and other xstate-provided APIs from the template.
 
 ## Custom integration