jQuery.getJSON: Mark jqXHR.always() as added in 1.6

Closes jquery#941

Author: laughinghan

entries/jQuery.getJSON.xml

@@ -61,7 +61,7 @@ $.getJSON( "ajax/test.json", function( data ) {
     <h4 id="jsonp">JSONP</h4>
     <p>If the URL includes the string "callback=?" (or similar, as defined by the server-side API), the request is treated as JSONP instead. See the discussion of the <code>jsonp</code> data type in <code><a href="/jQuery.ajax/">$.ajax()</a></code> for more details.</p>
     <h4 id="jqxhr-object">The jqXHR Object</h4>
-    <p><strong>As of jQuery 1.5</strong>, all of jQuery's Ajax methods return  a superset of the <code>XMLHTTPRequest</code> object. This jQuery XHR object, or "jqXHR," returned by <code>$.getJSON()</code> implements the Promise interface, giving it all the properties, methods, and behavior of a Promise (see <a href="/category/deferred-object/">Deferred object</a> for more information). The <code>jqXHR.done()</code> (for success), <code>jqXHR.fail()</code> (for error), and <code>jqXHR.always()</code> (for completion, whether success or error) methods take a function argument that is called when the request terminates. For information about the arguments this function receives, see the <a href="/jQuery.ajax/#jqXHR">jqXHR Object</a> section of the <code>$.ajax()</code> documentation.</p>
+    <p><strong>As of jQuery 1.5</strong>, all of jQuery's Ajax methods return  a superset of the <code>XMLHTTPRequest</code> object. This jQuery XHR object, or "jqXHR," returned by <code>$.getJSON()</code> implements the Promise interface, giving it all the properties, methods, and behavior of a Promise (see <a href="/category/deferred-object/">Deferred object</a> for more information). The <code>jqXHR.done()</code> (for success), <code>jqXHR.fail()</code> (for error), and <code>jqXHR.always()</code> (for completion, whether success or error; added in jQuery 1.6) methods take a function argument that is called when the request terminates. For information about the arguments this function receives, see the <a href="/jQuery.ajax/#jqXHR">jqXHR Object</a> section of the <code>$.ajax()</code> documentation.</p>
     <p>The Promise interface in jQuery 1.5 also allows jQuery's Ajax methods, including <code>$.getJSON()</code>, to chain multiple <code>.done()</code>, <code>.always()</code>, and <code>.fail()</code> callbacks on a single request, and even to assign these callbacks after the request may have completed. If the request is already complete, the callback is fired immediately.</p>
     <pre><code>
 // Assign handlers immediately after making the request,