Fix submenu element ID.

RELNOTES: None.
PiperOrigin-RevId: 199184609
diff --git a/site/_layouts/documentation.html b/site/_layouts/documentation.html
index badad8e..109cad4 100644
--- a/site/_layouts/documentation.html
+++ b/site/_layouts/documentation.html
@@ -99,7 +99,7 @@
                     aria-controls="javascript-menu">
                   Bazel and JavaScript<span class="caret"></span>
                 </a>
-                <ul class="collapse sidebar-nav sidebar-submenu" id="java-menu">
+                <ul class="collapse sidebar-nav sidebar-submenu" id="javascript-menu">
                   <li><a href="/versions/{{ site.version }}/bazel-and-javascript.html">JavaScript Resources</a></li>
                   <li><a href="/versions/{{ site.version }}/build-javascript.html">Building JavaScript</a></li>
                 </ul>