Remove .html extension from links

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

Index: chrome/common/extensions/docs/templates/articles/about_apps.html
diff --git a/chrome/common/extensions/docs/templates/articles/about_apps.html b/chrome/common/extensions/docs/templates/articles/about_apps.html
index fcfa5187ccb2c57a41f777540a843d564e3491e5..e2a5b1f2e3c21f965b6745d501b71092186b2fb8 100644
--- a/chrome/common/extensions/docs/templates/articles/about_apps.html
+++ b/chrome/common/extensions/docs/templates/articles/about_apps.html
@@ -72,7 +72,7 @@ Users can fully uninstall apps.
 Without any effort on your part, your apps will launch offline.
 But you will need to put some effort into making sure user data is stored locally while offline
 and then synced back up to your data server once online
-(see <a href="offline_apps.html">Offline First</a>).
+(see <a href="offline_apps">Offline First</a>).
 </p>
 
 <h2 id="develop">How to develop them</h2>
@@ -97,20 +97,20 @@ To learn more about how to develop Chrome Apps:
 
 <ul>
 	<li>
-		<a href="app_architecture.html">Understanding the Architecture</a>
+		<a href="app_architecture">Understanding the Architecture</a>
 		introduces the app container, programming, and security models.
 	</li>
 	<li>
-		<a href="app_lifecycle.html">The Fundamentals</a>
+		<a href="app_lifecycle">The Fundamentals</a>
 		shows how to use this architecture and how to build
 		for offline, manage data, and embed external content.
 	</li>
 	<li>
-		<a href="app_network.html">Advanced Technologies</a>
+		<a href="app_network">Advanced Technologies</a>
 		shows how to use the powerful network and hardware APIs.
 	</li>
 	<li>
-		<a href="app_deprecated.html">Disabled Features</a>
+		<a href="app_deprecated">Disabled Features</a>
 		describes the web features that have been disabled
 		and what to use in their place, where relevant.
 	</li>