Fixed typo in documentation

chrome/common/extensions/docs/templates/intros/declarativeWebRequest.html

 <h2 id="notes">Notes</h2>
 
 <p>
 Use the <code>chrome.declarativeWebRequest</code> module to intercept, block, or
 modify requests in-flight. It is significantly faster than the <a
   href="webRequest.html"><code>chrome.webRequest</code> API</a> because you can
 register rules that are evaluated in the browser rather than the
 JavaScript engine which reduces roundtrip latencies and allows for very high
 efficiency.
 </p>
@@ skipping 18 matching lines @@
 }</pre>
 
 <p>
 Note that certain types of non-sensitive requests do not require host
 permissions:
 <ul>
   <li><code>CancelRequest</code>
   <li><code>IgnoreRules</code>
   <li><code>RedirectToEmptyDocument</code>
   <li><code>RedirectToTransparentImage</code>
-  <li><code>RedirectByRegex</code> when the redirect destination has
+  <li><code>RedirectByRegEx</code> when the redirect destination has
     the same domain as the original request
   <li><code>RedirectRequest</code> when the redirect destination has
     the same domain as the original request
 </ul>
 
 <h2 id="rules">Rules</h2>
 
 <p>
 The Declarative Web Request API follows the concepts of the <a
   href="events.html#declarative">Declarative API</a>. You can register rules to
@@ skipping 180 matching lines @@
 chrome.declarativeWebRequest.onRequest.addRules([rule1, rule2]);
 </pre>
 
 <p>
 It is important to recognize that the <code>IgnoreRules</code> action is not
 persisted across <a href="#evaluation">request stages</a>. All conditions of
 all rules are evaluated at each stage of a web request. If an
 <code>IgnoreRules</code> action is executed, it applies only to other actions
 that are executed for the same web request in the same stage.
 </p>