Update README.md

Author: diazwatson

app/code/Magento/AuthorizenetAcceptjs/README.md

@@ -24,6 +24,6 @@ Extension developers can interact with the Magento_AuthorizenetAcceptjs module.
 
 This module observes the following events:
 
-`payment_method_assign_data_authorizenet_acceptjs` event in the `Magento\AuthorizenetAcceptjs\Observer\DataAssignObserver` file.
+- `payment_method_assign_data_authorizenet_acceptjs` event in the `Magento\AuthorizenetAcceptjs\Observer\DataAssignObserver` file.
 
 For information about an event in Magento 2, see [Events and observers](http://devdocs.magento.com/guides/v2.3/extension-dev-guide/events-and-observers.html#events).