Docs: Splitting Secure Boot contents into subpages

Bug: 17650969
Change-Id: Iacbfdf033b1a9a57b13a53cec3d8d651d15bf05a
diff --git a/src/devices/devices_toc.cs b/src/devices/devices_toc.cs
index 491ca1a..1c622d6 100644
--- a/src/devices/devices_toc.cs
+++ b/src/devices/devices_toc.cs
@@ -317,8 +317,8 @@
               </a>
             </div>
             <ul>
-              <li><a href="<?cs var:toroot ?>devices/tech/security/secureboot/verified-boot.html">Verified boot</a></li>
-              <li><a href="<?cs var:toroot ?>devices/tech/security/secureboot/block-ota.html">Block-based OTA</a></li>
+              <li><a href="<?cs var:toroot ?>devices/tech/security/secureboot/verified-boot.html">Verifying boot</a></li>
+              <li><a href="<?cs var:toroot ?>devices/tech/security/secureboot/dm-verity.html">Implementing dm-verity</a></li>
             </ul>
           </li>
           <li class="nav-section">