fix(templates): bump home_portal <hN> levels (#640)

taccsite_cms/templates/home_portal.html

@@ -13,15 +13,15 @@
 {% block content %}
   {% placeholder "content" or %}
   <div class="container  s-document">
-    <h2>Core Experience Portal</h2>
+    <h1>Core Experience Portal</h1>
 
     <p><strong>The Texas Advanced Computing Center (TACC) provides powerful and intuitive web interfaces that remove technological hurdles.</strong></p>
 
     <p>The portal manages massive datasets, enables the execution of highly parallelized computations, and allows users to collaborate across the U.S. The portal is not just for scientists and engineers, TACC&#39;s resources can be used by technologists, industry partners, educators, humanities scholars, and others.</p>
 
     <p>The portal&#39;s main features include:</p>
 
-    <h3>Data Management</h3>
+    <h2>Data Management</h2>
 
     <ul>
       <li>Upload from your device or cloud storage.</li>
@@ -30,7 +30,7 @@ <h3>Data Management</h3>
       <li>Share with collaborators and reviewers.</li>
     </ul>
 
-    <h3>Computation</h3>
+    <h2>Computation</h2>
 
     <ul>
       <li>Queue HPC Jobs.</li>