deferred.isRejected: Fix broken link

Found by hydra-link-checker:

- code:    404
  url:     https://api.jquery.com/deferred.isRejected/h/deferred.reject/
  parent:  https://api.jquery.com/deferred.isRejected/
  error:   Not Found

Author: Krinkle

entries/deferred.isRejected.xml

@@ -9,7 +9,7 @@
     <div class="warning">
       <p>Note: This API has been removed in jQuery 1.8; please use <a href="/deferred.state/"><code>deferred.state()</code></a> instead.</p>
     </div>
-    <p>Returns <code>true</code> if the Deferred object is in the rejected state, meaning that either <a href="h/deferred.reject/"><code>deferred.reject()</code></a> or <a href="/deferred.rejectWith/"><code>deferred.rejectWith()</code></a> has been called for the object and the failCallbacks have been called (or are in the process of being called).</p>
+    <p>Returns <code>true</code> if the Deferred object is in the rejected state, meaning that either <a href="/deferred.reject/"><code>deferred.reject()</code></a> or <a href="/deferred.rejectWith/"><code>deferred.rejectWith()</code></a> has been called for the object and the failCallbacks have been called (or are in the process of being called).</p>
     <p>Note that a Deferred object can be in one of three states: pending, resolved, or rejected; use <a href="/deferred.isResolved/"><code>deferred.isResolved()</code></a> to determine whether the Deferred object is in the resolved state. These methods are primarily useful for debugging, for example to determine whether a Deferred has already been resolved even though you are inside code that intended to reject it.</p>
   </longdesc>
   <category slug="deferred-object"/>