Banner tweaks (#833)

Author: Steve Orvell

packages/lit-dev-content/site/home/1-splash.html

@@ -1,5 +1,5 @@
 <section id="new-banner">
-  <p>📣 Check out our brand new <a href="{{site.baseurl}}/tutorials">Tutorials Catalog</a> and <a href="{{site.baseurl}}/youtube">YouTube Channel!</a></p>
+  <p>📣 Check out our brand-new <a href="{{site.baseurl}}/tutorials">Tutorials</a> page and <a href="{{site.baseurl}}/youtube">Lit YouTube Channel!</a></p>
 </section>
 <section id="intro">
   <div id="splashLogo" role="heading" aria-level="1">