add Open Editor button to hero

Author: pepc84

index.html

@@ -189,6 +189,7 @@ <h1 style="font-family:'Space Grotesk',sans-serif;font-size:2rem;font-weight:600
         <div class="hero-actions">
           <a class="hero-link" href="/reference">Reference</a>
           <a class="hero-btn-download" href="/downloads">Download</a>
+          <a class="hero-btn-download" href="/editor" style="background:#111;color:#fff;">Open Editor</a>
         </div>
         <textarea id="hero-editor" style="display:none;"></textarea>