Update.

manual/api/number.html

@@ -85,6 +85,7 @@
                         <li><a href="../tutorials/database-app.html">Database App</a></li>
                         <li><a href="../tutorials/template-rendering.html">Templates</a></li>
                         <li><a href="../tutorials/cli-tool.html">CLI Tool</a></li>
+                        <li><a href="../tutorials/web-server.html">Web Server</a></li>
                     </ul>
                 </div>
                 <div class="section">
@@ -99,6 +100,19 @@
                         <li><a href="../howto/error-handling.html">Error Handling</a></li>
                     </ul>
                 </div>
+                <div class="section">
+                    <span class="section-title">Contributing</span>
+                    <ul>
+                        <li><a href="../contributing/index.html">Overview</a></li>
+                        <li><a href="../contributing/module-overview.html">Module Architecture</a></li>
+                        <li><a href="../contributing/pure-wren-module.html">Pure-Wren Modules</a></li>
+                        <li><a href="../contributing/c-backed-module.html">C-Backed Modules</a></li>
+                        <li><a href="../contributing/foreign-classes.html">Foreign Classes</a></li>
+                        <li><a href="../contributing/async-patterns.html">Async Patterns</a></li>
+                        <li><a href="../contributing/testing.html">Writing Tests</a></li>
+                        <li><a href="../contributing/documentation.html">Documentation</a></li>
+                    </ul>
+                </div>
             </nav>
         </aside>
         <main class="content">