Fixing path to chrome app samples in documentation

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

 <h1 id="informUsers">Keep Users Informed</h1>
 
 <p>
 Users engage with multiple devices throughout the day
 and they like notifications keeping them informed
 without disrupting what's in front of them.
 </p>
 
 <p>
 You can keep your users informed and help them decide
 when is a good time to re-engage with your app using
 <a href="cloudMessaging">Google Cloud Messaging (GCM)</a> and
-<a href="richNotifications">Rich Notifications</a> APIs. 
+<a href="richNotifications">Rich Notifications</a> APIs.
 </p>
 
 <p><img src="{{static}}/images/notifications.png"
      alt="Notifications in system user tray">
 </p>
 
 <p class="note">
 <b>GCM and Rich Notifications sample</b><br>
-The <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/gcm-notifications">gcm-notifications sample</a>
-shows a simple integration between GCM and Rich Notifications API. 
+The <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/samples/gcm-notifications">gcm-notifications sample</a>
+shows a simple integration between GCM and Rich Notifications API.
 </p>
 
 <h2 id="summary_workflow">Summary of user workflow</h2>
 
 <p>
 To keep users informed,
 you need a way to push new information to your users
 even when all your app's windows are closed or minimized.
 Here's a summary of the user workflow for a very simple email app
 (a real email app would be a lot more sophisticated),
@@ skipping 54 matching lines @@
 
 <p class="note">
 <b>Enable GCM</b><br>
 To use GCM in your app or extension,
 you need to <a href="cloudMessaging#enable_gcm">enable it first</a>.
 </p>
 
 <h2 id="send_message">Send message to app</h2>
 
 <p>
-Use the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/gcm-notifications">gcm-notifications sample</a>
+Use the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/samples/gcm-notifications">gcm-notifications sample</a>
 to generate a curl command to send a message to the server:
 </p>
 
 <pre>
 curl -H "Content-Type:application/x-www-form-urlencoded;charset=UTF-8" -H "Authorization: key=YOUR_APP_KEY" -d "registration_id=YOUR_REGISTRATION_ID" -d data.YOUR_MESSAGE_KEY=YOUR_MESSAGE_VALUE https://android.googleapis.com/gcm/send
 </pre>
 
 <p>
 GCM servers route the message to all instances of Chrome running apps
 or extensions with one of the registration IDs.
 As long as Chrome is running, even if the extension or app is not running,
 the app or extension's event page is woken up to deliver a message.</p>
 </p>
 
 <h2 id="create_notification">Create notification</h2>
 
 <p>
 The <code>messageReceived</code> event handler goes in your event page
 (see <a href="#get_data">Listen for new data</a> above).
 When the GCM service sends a message,
 the event handler creates a notification:
 </p>
 
 <pre>
   function messageReceived(message) {
     // A message is an object with a data property that
     // consists of key-value pairs.
-  
+
     // Returns a new notification ID used in the notification.
     function getNotificationId() {
-      var id = Math.floor(Math.random() * 9007199254740992) + 1; 
+      var id = Math.floor(Math.random() * 9007199254740992) + 1;
       //Stores latest notification ID so that event handlers can access
       //notification when background page is closed.
       chrome.storage.local.set({'id': id});
       return id.toString();
     }
-  
+
     // Concatenate all key-value pairs to form a display string.
     var messageString = "";
     for (var key in message.data) {
       if (messageString != "")
         messageString += ", "
       messageString += key + ":" + message.data[key];
     }
-  
+
     // Pop up a notification to show the GCM message.
     chrome.notifications.create(getNotificationId(), {
       title: 'New email',
       iconUrl: 'mail_128.png',
       type: 'basic',
       message: messageString
     }, creationCallback);
   }
  </pre>