expand the abort jsdoc

jquery/jquery-tests.ts

@@ -193,6 +193,12 @@ function test_ajax() {
     }, (jqXHR, textStatus, errorThrown) => {
         console.log(jqXHR, textStatus, errorThrown);
     });
+
+    // jqXHR object
+    var jqXHR = $.ajax({
+        url: "test.js"
+    });
+    jqXHR.abort('aborting because I can');
 }
 
 function test_ajaxComplete() {

jquery/jquery.d.ts

@@ -168,7 +168,9 @@ interface JQueryXHR extends XMLHttpRequest, JQueryPromise<any> {
      */
     overrideMimeType(mimeType: string): any;
     /**
-     * Cancel the request. Pass the statusText as textStatus parameter for done callback, "canceled" will be passed if not provided.
+     * Cancel the request. 
+     *
+     * @param statusText A string passed as the textStatus parameter for the done callback. Default value: "canceled"
      */
     abort(statusText?: string): void;
     /**