site/layouts: add modules section to FSC layout

site/layouts/_default/fsc.html

@@ -15,6 +15,7 @@
           <nav id="navbar-navigation" class="navbar navbar-light bg-light flex-column align-items-start p-3">
             <a class="navbar-brand" href="#">Navigation</a>
             <nav class="nav nav-pills flex-column">
+              <a class="nav-link ms-3 my-1" href="#modules">Modules</a>
               <a class="nav-link ms-3 my-1" href="#metadata-elements">Metadata Elements</a>
               <a class="nav-link ms-3 my-1" href="#download">Download</a>
               <a class="nav-link ms-3 my-1" href="#feedback">Feedback</a>
@@ -27,6 +28,31 @@
       <main class="col-lg-10">
         <h1>FSC Schema Extension</h1>
         <p class="lead">This page provides a reference specification for the Forest Stewardship Council (FSC) schema extension.</p>
+
+        <h2 id="modules">Modules</h2>
+        <p>Metadata elements in FSC schema extension are organized around seven <em>modules</em>:</p>
+        <div class="m-3">
+          <table class="table table-striped table-sm text-center">
+            <tbody>
+              <tr>
+                <td><a href="#module-Assurance">Assurance</a></td>
+                <td><a href="#module-Certificate">Certificate</a></td>
+                <td><a href="#module-Coverage">Coverage</a></td>
+              </tr>
+              <tr>
+                <td><a href="#module-Evaluation">Evaluation</a></td>
+                <td><a href="#module-Form">Form</a></td>
+                <td><a href="#module-Scope">Scope</a></td>
+              </tr>
+              <tr>
+                <td><a href="#module-Status">Status</a></td>
+                <td></td>
+                <td></td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+
         <h2 id="metadata-elements">Metadata Elements</h2>
 
         {{/* Assign the current page context to a variable so we don't lose */}}