update the version number used in docs
and update the offline docs landing page

Change-Id: I36388e0a125d6349518d9c4d5368fb76fb85cf7a
diff --git a/docs/docs-preview-index.html b/docs/docs-preview-index.html
index e26b57c..8d5422b 100644
--- a/docs/docs-preview-index.html
+++ b/docs/docs-preview-index.html
@@ -79,19 +79,16 @@
 
 <h2>Get Started</h2>
 <ul>
-  <li>View the <a href="reference/packages.html">API Reference</a></li>
+  <li>View the <a href="reference/packages.html">offline API Reference</a></li>
   <li>Read Diff Reports:</a>
     <ul>
-      <li><a href="sdk/api_diff/n-preview-1/changes.html"
-        >API 23 --> Preview 1</a></li>
+      <li><a href="https://developer.android.com/sdk/api_diff/24/changes.html"
+        >API 23 --> API 24</a></li>
     </ul>
   </li>
-  <li>Downloads and additional documentation are available at the
+  <li>For more information, visit the
     <a href="http://developer.android.com/preview/index.html">
       Android N Developer Preview site</a></li>
-  <li>For information about Developer Preview 1, visit the
-    <a href="http://developer.android.com/preview/support.html">Support</a>
-    page.</li>
 </ul>