Extensions Docs Server: Fix headings with no IDs

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

 <h1>Network Communications</h1>
 
 <p>
 Packaged apps can act as a network client
 for TCP and UDP connections.
 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="socket.html">Sockets API</a>.
@@ skipping 51 matching lines @@
   <li>"udp-bind::8899" &ndash; binding local port 8899 to receive UDP package</li>
   <li>"tcp-listen::8080" &ndash; TCP listening on local port 8080</li>
 </ul>
 
 <h2 id="tcp">Using TCP</h2>
 
 <p>
 Packaged apps can make connections to any service that supports TCP.
 </p>
 
-<h3>Connecting to a socket</h3>
+<h3 id="connecting">Connecting to a socket</h3>
 
 <p>
 Here's a sample showing how to connect to a socket:
 </p>
 
 <pre>
 chrome.socket.create('tcp', {}, function(createInfo) {
   socket.connect(createInfo.socketId, IP, PORT, onConnectedCallback);
 });
 </pre>
 
 <p>
 Keep a handle to the socketId so that
 you can later read and write to this socket.
 </p>
 
 <pre>
 chrome.socket.write(socketId, arrayBuffer, onWriteCompleteCallback);
 </pre>
 
-<h3>Reading to & writing from a socket</h3>
+<h3 id="reading">Reading to & writing from a socket</h3>
 
 <p>
 Reading and writing from a socket uses ArrayBuffer objects.
 </p>
 
 <pre>
 chrome.socket.read(socketId, null, function(readInfo) {
   if (readInfo.resultCode > 0) {
     // readInfo.data is an arrayBuffer.
   }
 });
 </pre>
 
-<h3>Disconnecting from a socket</h3>
+<h3 id="disconnecting">Disconnecting from a socket</h3>
 
 <p>Here's how to disconnect:</p>
 
 <pre>chrome.socket.disconnect(socketId);</pre>
 
 <h2 id="udp">Using UDP</h2>
 
 <p>
 Packaged apps can make connections to any service that supports UDP.
 </p>
 
-<h3>Sending data</h3>
+<h3 id="sending">Sending data</h3>
 
 <p>
 Here's a sample showing how to send data
 over the network using UDP:
 </p>
 
 <pre>
 // Create the Socket
 chrome.socket.create('udp', '127.0.0.1', 1337, {},
  function(socketInfo) {
    // The socket is created, now we want to connect to the service
    var socketId = socketInfo.socketId;
    chrome.socket.connect(socketId, function(result) {
      // We are now connected to the socket so send it some data
      chrome.socket.write(socketId, arrayBuffer,
        function(sendInfo) {
          console.log("wrote " + sendInfo.bytesWritten);
        }
      );
    });
  }
 );
 </pre>
 
-<h3>Receiving data</h3>
+<h3 id="receiving">Receiving data</h3>
 
 <p>
 This example is very similar to the 'Sending data' example
 with the addition of a special handler in the 'create' method.
 The parameter is an object with one value 'onEvent'
 that is a function reference to the method
 that will be called when data is available on the port.
 </p>
 
 <pre>
@@ skipping 13 matching lines @@
      chrome.socket.write(socketId, arrayBuffer,
        function(sendInfo) {
          console.log("wrote " + sendInfo.bytesWritten);
        }
      );
    });
  }
 );
 </pre>
 
-<p class="backtotop"><a href="#top">Back to top</a></p>
+<p class="backtotop"><a href="#top">Back to top</a></p>