Tutorial for sharing a variable

Intended to be an introduction before talking about macros.

RELNOTES: None.
PiperOrigin-RevId: 162733299
diff --git a/site/_layouts/documentation.html b/site/_layouts/documentation.html
index 16cbbe6..671baa61 100644
--- a/site/_layouts/documentation.html
+++ b/site/_layouts/documentation.html
@@ -106,6 +106,18 @@
 
               <li>
                 <a class="sidebar-nav-heading" data-toggle="collapse"
+                    href="#extensions-tutorials" aria-expanded="false"
+                    aria-controls="extensions-tutorials">
+                  Tutorials <span class="caret"></span>
+                </a>
+                <ul class="collapse sidebar-nav sidebar-submenu" id="extensions-tutorials">
+                  <li><a href="/versions/{{ site.version }}/skylark/tutorial-sharing-variables.html">Sharing Variables</a></li>
+                  <li><a href="/versions/{{ site.version }}/skylark/cookbook.html">Examples</a></li>
+                </ul>
+              </li>
+
+              <li>
+                <a class="sidebar-nav-heading" data-toggle="collapse"
                     href="#extensions-concepts" aria-expanded="false"
                     aria-controls="extensions-concepts">
                   Concepts <span class="caret"></span>
@@ -126,7 +138,6 @@
               <li><a href="/versions/{{ site.version }}/skylark/build-style.html">Style guide for BUILD files</a></li>
               <li><a href="/versions/{{ site.version }}/skylark/bzl-style.html">Style guide for bzl files</a></li>
 
-              <li><a href="/versions/{{ site.version }}/skylark/cookbook.html">Examples</a></li>
               <li><a href="/versions/{{ site.version }}/skylark/lib/skylark-overview.html">Reference</a></li>
               <li><a href="/versions/{{ site.version }}/skylark/language.html">Language</a></li>
             </ul>