Remove .html extension from links

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

Index: chrome/common/extensions/docs/templates/articles/app_network.html
diff --git a/chrome/common/extensions/docs/templates/articles/app_network.html b/chrome/common/extensions/docs/templates/articles/app_network.html
index 9d66867329d49ba514ff618a3d2b3aa66a44c830..378ae2117271d55b9e5868815b8cef27dd7aa92e 100644
--- a/chrome/common/extensions/docs/templates/articles/app_network.html
+++ b/chrome/common/extensions/docs/templates/articles/app_network.html
@@ -7,9 +7,9 @@ This doc shows you how to use TCP and UDP
 to send and receive data over the network.
 For more information,
 see the
-<a href="sockets_udp.html">Sockets UDP</a>,
-<a href="sockets_tcp.html">Sockets TCP</a> and
-<a href="sockets_tcp_server.html">Sockets TCP Server</a> APIs.
+<a href="sockets_udp">Sockets UDP</a>,
+<a href="sockets_tcp">Sockets TCP</a> and
+<a href="sockets_tcp_server">Sockets TCP Server</a> APIs.
 </p>
 
 <p class="note">
@@ -29,7 +29,7 @@ and <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/udp"
 
 <p>
 For Chrome Apps that use TCP or UDP,
-add the <a href="manifest/sockets.html">sockets</a> entry to the manifest
+add the <a href="manifest/sockets">sockets</a> entry to the manifest
 and specify the IP end point permission rules.
 For example:
 </p>
@@ -63,7 +63,7 @@ The syntax of socket "host-pattern" entries follows these rules:
 </pre>
 
 <p>
-See <a href="manifest/sockets.html">Sockets Manifest Key</a> for detailed
+See <a href="manifest/sockets">Sockets Manifest Key</a> for detailed
 description of the syntax.
 </p>