docs/themes/mynewt/header: Update navbar

Adds new 'CVE' section to the
navigation, replacing 'Events'
diff --git a/docs/themes/mynewt/header.html b/docs/themes/mynewt/header.html
index d9e4e16..0d2c2b7 100644
--- a/docs/themes/mynewt/header.html
+++ b/docs/themes/mynewt/header.html
@@ -40,7 +40,7 @@
                         <a href="/community/">Community</a>
                     </li>
                     <li>
-                        <a href="/events/">Events</a>
+                        <a href="/cve/">CVE</a>
                     </li>
                 </ul>