Remove .html extension from links

chrome/common/extensions/docs/templates/articles/app_codelab.html

Index: chrome/common/extensions/docs/templates/articles/app_codelab.html
diff --git a/chrome/common/extensions/docs/templates/articles/app_codelab.html b/chrome/common/extensions/docs/templates/articles/app_codelab.html
index eac1e869d30b5af6b7b793e0fb37a29f6d9a009b..204053eede40458759fcd2102c35f37add3cfce4 100644
--- a/chrome/common/extensions/docs/templates/articles/app_codelab.html
+++ b/chrome/common/extensions/docs/templates/articles/app_codelab.html
@@ -16,7 +16,7 @@ Each lab builds upon the previous lab's sample code.
 To see how the Todo app changes as you work through the lab,
 upload the code from the extensions management page
 and launch the app
-(see <a href="first_app.html#five">Create Your First App tutorial</a>).
+(see <a href="first_app#five">Create Your First App tutorial</a>).
 </p>
 
 <p class="note">
@@ -33,9 +33,9 @@ or by navigating to <code>chrome://extensions</code>.
 <p>
 You can choose to write your sample Todo app
 using a preferred
-<a href="app_frameworks.html">MVC framework</a>.
+<a href="app_frameworks">MVC framework</a>.
 Starting in
-<a href="app_codelab3_mvc.html">3 - Create MVC</a>,
+<a href="app_codelab3_mvc">3 - Create MVC</a>,
 we've provided sample code in pure JavaScript
 and using
 <a href="http://angularjs.org">AngularJS</a>.
@@ -56,12 +56,12 @@ in the sample code repository.
 <h2 id="tutorial_structure">Codelab structure</h2>
 
 <ul>
-<li><a href="app_codelab1_setup.html">1 - Set Up Development Environment</a></li>
-<li><a href="app_codelab2_basic.html">2 - Create Basic App</a></li>
-<li><a href="app_codelab3_mvc.html">3 - Create MVC</a></li>
-<li><a href="app_codelab5_data.html">4 - Save and Feth Data</a></li>
-<li><a href="app_codelab6_lifecycle.html">5 - Manage App Lifecycle</a></li>
-<li><a href="app_codelab7_useridentification.html">6 - Access User's Data</a></li>
-<li><a href="app_codelab8_webresources.html">7 - Access Web Resources</a></li>
-<li><a href="app_codelab_10_publishing.html">8 - Publish App</a></li>
+<li><a href="app_codelab1_setup">1 - Set Up Development Environment</a></li>
+<li><a href="app_codelab2_basic">2 - Create Basic App</a></li>
+<li><a href="app_codelab3_mvc">3 - Create MVC</a></li>
+<li><a href="app_codelab5_data">4 - Save and Feth Data</a></li>
+<li><a href="app_codelab6_lifecycle">5 - Manage App Lifecycle</a></li>
+<li><a href="app_codelab7_useridentification">6 - Access User's Data</a></li>
+<li><a href="app_codelab8_webresources">7 - Access Web Resources</a></li>
+<li><a href="app_codelab_10_publishing">8 - Publish App</a></li>
 </ul>