Updated Documentation

Author: mrin9

docs/api.html

@@ -705,8 +705,9 @@ <h2> Events</h2>
               <td class="gray">
                 fired before user clicks try. 
                 Provides a <a href="https://developer.mozilla.org/en-US/docs/Web/API/Request" target="_blank">request object</a> 
-                that can be modified before making the final call to the API.
-
+                that can be modified before making the final call to the API. 
+                And a <a href="https://developer.mozilla.org/en-US/docs/Web/API/AbortController" target="_blank"> AbortController object</a> 
+                which can be used for aborting a request 
                 <br/>
                 Example: To add a custom header before making a try call  
                 <pre class="shadow1 code-block" style = "width:500px">