Update nav header to h2. CSS tweak to retain size.

Author: katshann-raspberry

jekyll-assets/_layouts/docs.html

@@ -11,11 +11,11 @@
         <div id="toc-container">
           <div id="toc-inner">
             <div id="docs-header">
-              <span id="docs-header-title">
+              <h2 id="docs-header-title">
                 <a href="/documentation">
                   Documentation
                 </a>
-              </span>
+              </h2>
               <label class="mobile-menu-toggle" for="mobile-toggle">
                 <div class="mobile-menu-toggle-inner"></div>
               </label>

jekyll-assets/css/style.css

@@ -104,6 +104,10 @@ h1 {
   background: transparent;
 }
 
+h2 {
+  font-size: initial;
+}
+
 body, article, div, nav, h1, h2, h3, h4, p {
   display: block;
   font-family: 'Roboto', sans-serif;