update banner

Author: mattcone

_includes/nav.html

@@ -1,7 +1,7 @@
 <a id="jotbird-banner" class="jotbird-banner" href="https://www.jotbird.com" target="_blank" rel="noopener noreferrer">
   <div class="container jotbird-banner__inner">
     <img src="https://assets.jotbird.com/logo-black-white(2).svg" alt="JotBird" class="jotbird-banner__logo">
-    <span class="jotbird-banner__text">Introducing JotBird — a clean, privacy-first live Markdown editor. ✨</span>
+    <span class="jotbird-banner__text">Introducing JotBird —  instantly publish Markdown as a shareable web page. ✨</span>
     <button class="jotbird-banner__close" type="button" aria-label="Dismiss announcement">×</button>
   </div>
 </a>