Docs: Addition of Authentication page

Bug: 21114452
Change-Id: I2d652b9453fcf87d1582d5b3a71296fe3970822b
diff --git a/src/devices/devices_toc.cs b/src/devices/devices_toc.cs
index 825edfa..1d8069b 100644
--- a/src/devices/devices_toc.cs
+++ b/src/devices/devices_toc.cs
@@ -308,6 +308,7 @@
               </a>
             </div>
             <ul>
+              <li><a href="<?cs var:toroot ?>devices/tech/security/authentication/index.html">Authentication</a></li>
               <li><a href="<?cs var:toroot ?>devices/tech/security/encryption/index.html">Encryption</a></li>
               <li class="nav-section">
                 <div class="nav-section-header">